Interstate Route Marker (M1-1) INTERSTATE ROUTE MARKER (M1-1)
The Interstate Route Marker (M1-1) shall be authorized for use to mark Interstate routes, intersecting highways approaching an interchange with an Interstate route and trailblazing to an Interstate.

The 36 inches x 36 inches size for one and two digit route numbers and the 45 inches x 36 inches size for three digit route numbers shall be used on the Interstate route.  The 24 inches x 24 inches size for one and two digit route numbers and the 30 inches x 24 inches size for three digit route numbers shall be reserved for use on conventional highways.


Interstate Business Loop Sign (M1-2) INTERSTATE BUSINESS LOOP SIGN (M1-2)
The Interstate Business Loop Sign (M1-2) shall be authorized for use to mark Interstate business loop routes and intersecting highways approaching an interchange with an Interstate business loop.

On an Interstate business loop, the 36 inches x 36 inches size shall be used for one and two digit route numbers; three digit route numbers shall utilize the 45 inches x 36 inches size marker.  On intersecting highways approaching an Interstate business loop, the 24 inches x 24 inches size may be used for one and two digit route numbers; three digit route numbers may utilize the 30 inches x 24 inches size marker.


Interstate Business Spur Sign (M1-3) INTERSTATE BUSINESS SPUR SIGN (M1-3)
The Interstate Business Spur Sign (M1-3) shall be authorized for use to mark Interstate business spur routes and intersecting highways approaching an interchange with an Interstate business spur.

On an Interstate business spur, the 36 inches x 36 inches size shall be used for one and two digit route numbers; three digit route numbers shall utilize the 45 inches x 36 inches size marker.  On intersecting highways approaching an Interstate business spur, the 24 inches x 24 inches size may be used for one and two digit route numbers; three digit route numbers may utilize the 30 inches x 24 inches size marker.


US Route Marker (M1-4) US ROUTE MARKER (M1-4)
(a) Justification.  The US Route Marker (M1-4) shall be authorized for use to mark US traffic routes.

(b) Size.  The standard size of M1-4 shall be 24 inches x 24 inches for one and two digit route numbers and 30 inches x 24 inches for three digit route numbers.  The 36 inches x 36 inches size for one and two digit route numbers and the 45 inches x 36 inches size for three digit route numbers may be used on expressways and freeways.


Pennsylvania Route Marker (M1-5) PENNSYLVANIA ROUTE MARKER (M1-5)
(a) Justification.  The Pennsylvania Route Marker (M1-5) shall be authorized for use to mark Pennsylvania traffic routes.

(b) Size.  The standard size of M1-5 shall be 24 inches x 24 inches for one and two digit route numbers and 30 inches x 24 inches for three digit route numbers.  The 36 inches x 36 inches size for one and two digit route numbers and the 45 inches x 36 inches size for three digit route numbers may be used on expressways and freeways.


Pennsylvania Turnpike Marker (M1-5A) PENNSYLVANIA TURNPIKE MARKER (M1-5A)
The Pennsylvania Turnpike Marker (M1-5A) shall be authorized for use to mark Pennsylvania Turnpike traffic routes.  This sign is for use with Pennsylvania Route designations only.

The standard size shall be 36 inches x 36 inches for one and two digit route numbers and 45 x 36 inches for three digit route numbers.


BicyclePA Route Marker (M1-8) BicyclePA ROUTE MARKER (M1-8)
The BicyclePA Route Marker (M1-8) shall be authorized for use to mark that are designated and approved by the Department of Transportation.

The M1-8 marker will show the appropriate cardinal direction, e.g., NORTH, SOUTH, EAST, or WEST, or JCT or END in the top panel.  END shall used only when route terminates at any location other than the state border.  The bottom panel shall display the official route designation.  Route designations are alphabet letters, e.g., A, B.  Spur routes off the main route shall have an alphanumeric designation, e.g. A1, B1.


BicyclePA Route Marker Turn Assembly (M1-8A) BicyclePA ROUTE MARKER TURN ASSEMBLY (M1-8A)
The BicyclePA Route Marker Turn Assembly (M1-8A) shall be authorized for use on BicyclePA Routes that are designated and approved by the Department of Transportation.

The M1-8A marker will show the appropriate cardinal direction, e.g. NORTH, SOUTH, EAST or WEST in the topmost panel.  The middle panel shall display the official route designation.  Route designations are alphabet letters, e.g., A, B.  Spur routes off the main route shall have an alphanumeric designation, e.g., A1, B1.  The lower panel shall display the proper turn arrow or advance turn arrow.


Eisenhower Interstate System Sign (M1-10) EISENHOWER INTERSTATE SYSTEM SIGN (M1-10)
The Eisenhower Interstate System Sign (M1-10) was approved by Congress on July 29, 1993 for use on all Interstate Highways.  The M1-10 sign shall be installed at appropriate areas along the Interstate such as rest areas, welcome centers, and scenic overlooks.

Junction Marker (M2-1) JUNCTION MARKER (M2-1)
(a) Justification.  The Junction Marker (M2-1) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) in advance of an intersection with the US or Pennsylvania traffic route.

(b) Placement.  The M2-1 marker shall be placed above the route marker.

(c) Size.  The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route inchesmarkers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate Junction Marker (M2-1-1) INTERSTATE JUNCTION MARKER (M2-1-1)
The Interstate Junction Marker (M2-1-1) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) in advance of an intersection with an Interstate traffic route.

The M2-1-1 marker shall be placed above the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


North Marker (M3-1) NORTH MARKER (M3-1)
The North Marker (M3-1) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) to indicate the general direction of the entire route.

The M3-1 marker shall be placed directly above the route marker.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate Route Marker (M1-1) INTERSTATE NORTH MARKER (M3-1-1)
The Interstate North Marker (M3-1-1) shall be authorized for use in conjunction with Interstate Route Marker (M1-1) to indicate the general direction of the entire route.

The M3-1-l marker shall placed directly above the route marker.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate Business North Marker (M3-1-2) INTERSTATE BUSINESS NORTH MARKER (M3-1-2)
The Interstate Business North Marker (M3-1-2) shall be authorized for use in conjunction with the Interstate Business Loop Sign (M1-2) to indicate the general direction of the entire route.

The M3-1-2 marker shall be placed directly above the marker.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


East Marker (M3-2) EAST MARKER (M3-2)
The East Marker (M3-2) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) to indicate the general direction of the entire route.

The M3-2 marker shall be paced directly above the route marker.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shell be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate East Marker (M3-2-1) INTERSTATE EAST MARKER (M3-2-1)
The Interstate East Marker (M3-2-1) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) to indicate the direction of the entire route.

The M3-2-1 marker shall be placed directly above the route marker.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


South Marker (M3-3) SOUTH MARKER (M3-3)
The South Marker (M3-3) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) to indicate the general direction of the entire route.

The M3-3 marker shall be directly above the route marker.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and 30 inches x 24 inches route markers.  The 30 inches x 16 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate South Marker (M3-3-1) INTERSTATE SOUTH MARKER (M3-3-1)
The Interstate South Marker (M3-3-1) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) to indicate the general direction of the entire route.

The M3-3-1 marker shall be placed directly above the route marker.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate Business South Marker (M3-3-2) INTERSTATE BUSINESS SOUTH MARKER (M3-3-2)
The Interstate Business South Marker (M3-3-2) shall be authorized for use in conjunction with the Interstate Business Loop Sign (M1-2) to indicate the general direction of the entire route.

The M3-3-2 marker shall be placed directly above the route marker.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and 45 inches x 30 inches route markers.


West Marker (M3-4) WEST MARKER (M3-4)
The West Marker (M3-4) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) to indicate the general direction of the entire route.

The M3-4 marker shall be placed directly above the route marker.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate West Marker (M3-4-1) INTERSTATE WEST MARKER (M3-4-1)
The Interstate West Marker (M3-4-1) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) to indicate the general direction of the entire route.

The M3-4-1 marker shall be placed directly above the route marker.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Alternate Marker (M4-1) ALTERNATE MARKER (M4-1)
(a) Justification.  The Alternate Marker (M4-1) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) to indicate an officially designated alternate routing of a numbered route between two points on that route.

(b) Placement.  The M4-1 marker shall be placed above the route marker.

(c) Size.  The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


By-Pass Marker (M4-2) BY-PASS MARKER (M4-2)
(a) Justification.  The By-Pass Marker (M4-2) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) to designate an alternate route that branches from the regular numbered route through a city, bypasses a part of the city or congested area, and rejoins the regular numbered route beyond the city.

(b) Placement.  The M4-2 marker shall be placed above the route marker.

(c) Size.  The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Business Marker (M4-3) BUSINESS MARKER (M4-3)
(a) Justification.  The Business Marker (M4-3) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) to designate an alternate route that branches from the regular numbered route, passes through the business portion of a city, and rejoins the regular numbered route beyond the city.

(b) Placement.  The M4-3 marker shall be placed above the route marker.

(c) Size.  The 24 inches x 12 inches size shall used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 16 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Truck Marker (M4-4) TRUCK MARKER (M4-4)
(a) Justification.  The Truck Marker (M4-4) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) to designate an alternate route that branches from the regular numbered route, bypasses an area which is congested or where weight or height limitations have been officially established, and rejoins the regular numbered route beyond that area.

(b) Placement.  The M4-4 marker shall be placed above the route marker.

(c) Size.  The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches markers.


To Marker (M4-4) TO MARKER (M4-5)
(a) Justification.  The To Marker (M4-5) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) to provide directional guidance to a particular road facility from other highways in the vicinity.  The use of the M4-5 indicates that the road or street where the marker is placed is not part of the indicated route but merely indicates the direction to the nearest or most convenient point of access to the route.

(b) Placement.  The M4-5 marker shall be placed above the route marker.  If a Cardinal Direction sign is also included in the assembly, the M4-5 shall be mounted directly above the Cardinal Direction sign.

(c) Size.  The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate To Marker (M4-5-1) INTERSTATE TO MARKER (M4-5-1)
The Interstate To Marker (M4-5-1) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) to provide directional guidance to a particular road facility from other highways in the vicinity.  The use of the M4-5-1 marker indicates that the road or street where the marker is placed is not a part of the indicated route but merely indicates the direction to the nearest or most convenient point of access to the route.

The M4-5-1 marker shall be placed directly above the route marker.  If a Cardinal Direction sign is also used in the assembly, the M4-5-1 shall be mounted directly above the Cardinal Direction sign.

The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


End Marker (M4-6) END MARKER (M4-6)
(a) Justification.  The End Marker (M4-6) shall be authorized for use in conjunction a route marker where the route being traveled ends at a junction with another route.

(b) Placement.  The M4-6 marker shall be placed above the route marker designating the route being terminated.

(c) Size.  The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 15 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Detour Marker (M4-8) DETOUR MARKER (M4-8)
(a) Justification.  The Detour Marker (M4-8) shall be authorized for use in conjunction with a route marker to mark a temporary route that branches from a regular numbered route, bypasses a section of that route which is closed for construction or traffic emergency and rejoins the regular numbered route beyond that section.

(b) Placement.  The M4-8 marker shall be placed above the route marker designating the route being detoured.

(c) Size.  The 24 inches x 12 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 15 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


End Detour Sign (M4-8A) END DETOUR SIGN (M4-8A)
The End Detour Sign (M4-8A) shall be authorized for use at the end of a signed detour.  If route markers are used, this sign may be placed above the last route marker of the detour.

Car Detour Marker (M4-8-1) CAR DETOUR MARKER (M4-8-1)
The Car Detour Marker (M4-8-1) may be used above a route marker to identify a temporary numbered traffic route for cars when the normal traffic route is closed for construction or maintenance and the Truck Detour Marker (M4-8-2) is also used on an alternate detour route.  The marker may also be used for detours of unnumbered traffic routes if a directional arrow is used beneath or within the border of the M4-8-1 marker.  (The marker should be elongated if an arrow is used within the border.)

Truck Detour Marker (M4-8-2) TRUCK DETOUR MARKER (M4-8-2)
The Truck Detour Marker (M4-8-2) may be used above a route marker to identify a temporary numbered traffic route for trucks when the normal traffic route is closed for construction or maintenance and the Car Detour Marker (M4-8-1) is also used on an alternate detour route.  The marker may also be used for detours of unnumbered traffic routes if a direction arrow is used beneath or within the border of the M4-8-2 marker.  (The marker should be elongated if an arrow is used within the border.)

Pedestrian/Bicycle Detour Sign (M4-9A) PEDESTRIAN/BICYCLE DETOUR SIGN (M4-9A)
The Pedestrian/Bicycle Detour (M4-9A) sign should be used where a pedestrian/bicycle detour route has been established because of the closing of a pedestrian/bicycle facility to through traffic.  If used, the M4-9A sign shall have an arrow pointing in the appropriate direction.  The Pedestrian Detour (M4-9B) sign or Bicycle Detour (M4-9C) sign may be used where a pedestrian or bicycle detour route (not both) has been established because of the closing of the pedestrian or bicycle facility to through traffic.

Pedestrian Detour Sign (M4-9B) PEDESTRIAN DETOUR SIGN (M4-9B)
The Pedestrian Detour (M4-9B) sign may be used where a pedestrian detour route has been established because of the closing of the pedestrian facility to through traffic.  If used, the M4-9B sign shall have an arrow in the appropriate direction.

Bicycle Detour Sign (M4-9C) BICYCLE DETOUR SIGN (M4-9C)
The Bicycle Detour (M4-9C) sign may be used where a bicycle detour route has been established because of the closing of the bicycle facility to through traffic.  If used, the M4-9C sign shall have an arrow pointing in the appropriate direction.

Detour Sign, Left (M4-9L) DETOUR SIGN, LEFT (M4-9L)
(a) Justification.  The Detour Sign, Left (M4-9L) shall be authorized for use to mark a detoured, unnumbered route.  If two unnumbered routes are detoured over the same highway, then Detour Arrow Signs, M4-10R and M4-10L, may be used to mark the other detoured route.

(b) Placement.  The M4-9L sign shall be placed where the detour changes direction.

(c) Size.  The standard size of M4-9L shall be 30 inches x 24 inches.


Detour Sign, Right (M4-9R) DETOUR SIGN, RIGHT (M4-9R)
(a) Justification.  The Detour Sign, Right (M4-9R) shall be authorized for use to mark a detoured, unnumbered route.  If two unnumbered routes are detoured over the same highway, then Detour Arrow Signs, M4-10R and M4-10L, may be used to mark the other detoured route.

(b) Placement.  The M4-9R sign shall be placed where the detour changes direction.

(c) Size.  The standard size of M4-9R shall be 30 inches x 24 inches.


Detour Sign, Straight (M4-9S) DETOUR SIGN, STRAIGHT (M4-9S)
(a) Justification.  The Detour Sign, Straight (M4-9S) shall be used to mark a detoured, unnumbered traffic route when the route crosses a numbered traffic route or any other major highway.

(b) Placement.  The M4-9S sign shall be placed before the intersection where applicable.


Left Advance Detour Sign (M4-9SL) LEFT ADVANCE DETOUR SIGN (M4-9SL)
(a) Justification.  The Left Advance Detour Sign (M4-9SL) may be used as an advance indication of a left turn in a detoured unnumbered traffic route.

(b) Placement.  The M4-9SL sign should be placed 250 feet to 750 feet in advance of the turn, but not in advance of another side road on the left.


Right Advance Detour Sign (M4-9SR) RIGHT ADVANCE DETOUR SIGN (M4-9SR)
(a) Justification.  The Right Advance Detour Sign (M4-9SR) may be used as an advance indication of a right turn in a detoured unnumbered traffic route.

(b) Placement.  The M4-9SR sign should be placed 250 feet to 750 feet in advance of the turn, but not in advance of another side road on the right.


Left Advance 45 Degree Detour Sign (M4-9-1AL) LEFT ADVANCE 45 DEGREE DETOUR (M4-9-1AL)
The Left Advance 45 Degree Detour Sign (M4-9-1AL) may be used as an advance indication of a left turn in a detoured, unnumbered traffic route.

The M4-9-1AL sign should be placed 250 feet to 750 feet in advance of the turn, but not in advance of another side road on the left.


Right Advance 45 Degree Detour Sign (M4-9-1AR) RIGHT ADVANCE 45 DEGREE DETOUR (M4-9-1AR)
The Right Advance 45 Degree Detour Sign (M4-9-1AR) may be used as an advance indication of a right turn in a detoured, unnumbered traffic route.

The M4-9-1AR sign should be placed 250 feet to 750 feet in advance of the turn, but not in advance of another side road on the right.


45 Degree Left Turn Detour Sign (M4-9-1BL) 45 DEGREE LEFT TURN DETOUR SIGN (M4-9-1BL)
The 45 Degree Left Turn Detour Sign (M4-9-1BL) may be authorized for use to mark a detoured, unnumbered traffic route.

The M4-9-1BL sign shall be placed where the detour changes direction.


45 Degree Right Turn Detour Sign (M4-9-1BR) 45 DEGREE RIGHT TURN DETOUR SIGN (M4-9-1BR)
The 45 Degree Right Turn Detour Sign (M4-9-1BR) may be authorized for use to mark a detoured, unnumbered traffic route.

The M4-9-1BR sign shall be placed where the detour changes direction.


Detour Arrow Left Sign (M4-10L) DETOUR ARROW LEFT SIGN (M4-10L)
(a) Justification.  The Detour Arrow Left Sign (M4-10L) shall be authorized for use when a detour route has been established due to the closure of a highway to through traffic.  It may also be used to mark one of two unnumbered routes detoured over the same highway when the other route is marked with the standard Detour Signs, M4-9R andM4-9L.

(b) Placement.  The M4-10L sign should normally be mounted just below the Road Closed Sign (R11-2) or the Road Closed-Local Traffic Only Sign (R11-3A).  When used to mark a detoured unnumbered route, it shall be placed where the detour changes direction.

(c) Size.  The standard size of the M4-10L sign shall be 48 inches x 18 inches.


Detour Arrow Right Sign (M4-10R) DETOUR ARROW RIGHT SIGN (M4-10R)
(a) Justification.  The Detour Arrow Right Sign (M4-10R) shall be authorized for use when a detour route has been established due to the closure of a highway to through traffic.  It may also be used to mark one of two unnumbered routes detoured over the same highway when the other route is marked with the standard Detour Signs, M4-9R and M4-9L.

(b) Placement.  The M4-10R sign should normally be mounted just below the Road Closed Sign (R11-2) or the Road Closed-Local Traffic Only Sign (R11-3A).  When used to mark a detoured unnumbered route, it shall be placed where the detour changes direction.

(c) Size.  The standard size of the M4-10R sign shall be 48 inches x 18 inches.


Detour Arrow Straight Sign (M4-10S) DETOUR ARROW STRAIGHT SIGN (M4-10S)
(a) Justification.  The Detour Arrow Straight Sign (M4-10S) shall be authorized for use where a detour route has been established due to the closure of a highway to through traffic when the detoured route crosses a numbered traffic route or other major highway.

It may also be used to mark one of two unnumbered routes being detoured over the same highway when the other route is marked with the standard Detour Signs (M4-9R, M4-9L, or M4-9S).

(b) Placement.  The M4-10S sign shall be placed before the intersection where applicable.

(c) Size.  The standard size of the M4-10S sign shall be 18 inches x 48 inches.


End Sign (Supplemental Plaque for Bicycle Route) (M4-12) END SIGN (SUPPLEMENTAL PLAQUE FOR BICYCLE ROUTE) (M4-12)
Where desired, supplemental plaques may used with the Bicycle Route Sign (D11-1) to furnish additional information such as directional guidance.  When used, the M4-12 sign should be mounted above the D11-1 sign, and the M7-1 through M7-7 signs should be mounted below the D11-1 sign.  The mirror image of the M7-1, M7-3, M7-4, Ml-6, and M7-7 signs are also authorized.

To Sign (Supplemental Plaque for Bicycle Route) (M4-13) TO SIGN (SUPPLEMENTAL PLAQUE FOR BICYCLE ROUTE) (M4-13)
Where desired, supplemental plaques may be used with the Bicycle Route Sign (D11-1) to furnish additional information such as directional guidance.  When used, the M4-13 sign should be mounted above the D11-1 sign, and the M7-1 through M7-7 signs should be mounted below the D11-l sign.  The mirror image of the M7-1, M7-3, M7-4, M7-6, and M7-7 signs are also authorized.

Begin Sign (Supplemental Plaque for Bicycle Route) (M4-14-1) BEGIN SIGN (SUPPLEMENTAL PLAQUE FOR BICYCLE ROUTE) (M4-14-1)
Where desired, supplemental plaques may be used with the Bicycle Route Sign (D11-1) to furnish additional information such as directional guidance.  When used, the M4-14-1 sign should be mounted above the D11-1 sign, and the M7-1 through M7-7 signs should be mounted below the D11-l sign.  The mirror image of the M7-1, M7-3, M7-4, M7-6, and M7-7 signs are also authorized.

Advance 90 Degree Left Turn Marker (M5-1L) ADVANCE 90 DEGREE LEFT TURN MARKER (M5-1L)
The Advance 90 Degree Left Turn Marker (M5-1L) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) in advance of a turn which must be made to follow the indicated route.

The M5-1L marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate Advance 90 Degree Left Turn Marker (M5-1-1L) INTERSTATE ADVANCE 90 DEGREE LEFT TURN MARKER (M5-1-1L)
The Interstate Advance 90 Degree Left Turn Marker (M5-1-1L) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) in advance of a turn which must be made to follow the indicated route.

The M5-1-1L marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Advance 90 Degree Right Turn Marker (M5-1R) ADVANCE 90 DEGREE RIGHT TURN MARKER (M5-1R)
The Advance 90 Degree Right Turn Marker (M5-1R) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) in advance of a turn which must be made to follow the indicated route.

The M5-1R marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate Advance 90 Degree Right Turn Marker (M5-1-1R) INTERSTATE ADVANCE 90 DEGREE RIGHT TURN MARKER (M5-1-1R)
The Interstate Advance 90 Degree Right Turn Marker (M5-1-1R) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) in advance of a turn which must be made to follow the indicated route.

The M5-1-1R marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Advance 45 Degree Left Turn Marker (M5-2L) ADVANCE 45 DEGREE LEFT TURN MARKER (M5-2L)
The Advance 45 Degree Left Turn Marker (M5-2L) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) in advance of a turn which must be made to follow the indicated route.

The M5-2L marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate Advance 45 Degree Left Turn Marker (M5-2-1L) INTERSTATE ADVANCE 45 DEGREE LEFT TURN MARKER (M5-2-1L)
The Interstate Advance 45 Degree Left Turn Marker (M5-2-1L) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) in advance of a turn which must be made to follow the indicated route.

The M5-2-1L marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Advance 45 Degree Right Turn Marker (M5-2R) ADVANCE 45 DEGREE RIGHT TURN MARKER (M5-2R)
The Advance 45 Degree Right Turn Marker (M5-2R) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) in advance of a turn which must be made to follow the indicated route.

The M5-2R marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate Advance 45 Degree Right Turn Marker (M5-2-1R) INTERSTATE ADVANCE 45 DEGREE RIGHT TURN MARKER (M5-2-1R)
The Interstate Advance 45 Degree Right Turn Marker (M5-2-1R) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) in advance of a turn which must be made to follow the indicated route.

The M5-2-1R marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Curved-Stem Advance Turn Arrow Marker (M5-3) CURVED-STEM ADVANCE TURN ARROW MARKER (M5-3)
The Curved-Stem Advance Turn Arrow Marker (M5-3) shall be used only on the approach to a circular intersection to depict a movement along the circulatory roadway around the central island and to the left, relative to the approach roadway and entry into the intersection.

If the M5-3 sign is used, then this arrow type should also be used consistently on any regulatory lane use signs, destination signs, and pavement markings for a particular destination or movement.


90 Degree Turn Marker (M6-1) 90 DEGREE TURN MARKER (M6-1)
The 90 Degree Turn Marker (M6-1) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) at an intersection where a turn must be made to follow the indicated route.

The M6-l marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate 90 Degree Turn Marker (M6-1-1) INTERSTATE 90 DEGREE TURN MARKER (M6-1-1)
The Interstate 90 Degree Turn Marker (M6-1-1) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) at an intersection where a turn must be made to follow the indicated route.

The M6-l-1 marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


45 Degree Left Turn Marker (M6-2L) 45 DEGREE LEFT TURN MARKER (M6-2L)
The 45 Degree Left Turn Marker (M6-2L) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) at an intersection where a turn must be made to follow the indicated route.

The M6-2L marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate 45 Degree Left Turn Marker (M6-2-1L) INTERSTATE 45 DEGREE LEFT TURN MARKER (M6-2-1L)
The Interstate 45 Degree Left Turn Marker (M6-2-1L) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) at an intersection where a turn must be made to follow the indicated route.

The M6-2-1L marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


45 Degree Right Turn Marker (M6-2R) 45 DEGREE RIGHT TURN MARKER (M6-2R)
The 45 Degree Right Turn Marker (M6-2R) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) at an intersection where a turn must be made to follow the indicated route.

The M6-2R marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate 45 Degree Right Turn Marker (M6-2-1R) INTERSTATE 45 DEGREE RIGHT TURN MARKER (M6-2-1R)
The Interstate 45 Degree Right Turn Marker (M6-2-1R) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) at an intersection where a turn must be made to follow the indicated route.

The M6-2-1R marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Straight Through Marker (M6-3) STRAIGHT THROUGH MARKER (M6-3)
The Straight Through Marker (M6-3) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) at an intersection where a straight through movement must be made to follow the indicated route but not in the absence of other assemblies indicating right or left turns.

The M6-3 marker shall be placed directly below route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


Interstate Straight Through Marker (M6-3-1) INTERSTATE STRAIGHT THROUGH MARKER (M6-3-1)
The Interstate Straight Through Marker (M6-3-1) shall be authorized for use in conjunction with the Interstate Route Marker (M1-1) at an intersection where a straight through movement must be made to follow the indicated route but not in the absence of other assemblies indicating right or left turns.

The M6-3-1 marker shall be placed directly below route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers.  The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches and the 45 inches x 36 inches route markers.


90 Degree Right and Left Turn Marker (M6-4) 90 DEGREE RIGHT AND LEFT TURN MARKER (M6-4)
The 90 Degree Right and Left Turn Marker (M6-4) shall be authorized for use in conjunction with the US Route Marker (M1-4) or the Pennsylvania Route Marker (M1-5) at an intersection where a turn must be made to the right or left to follow the indicated route.

The M6-4 marker shall be placed directly below the route marker.

The 21 inches x 15 inches size shall be used with the 24 inches x 24 inches and the 30 inches x 24 inches route markers. The 30 inches x 18 inches size shall be used with the 36 inches x 36 inches the 45 inches x 36 inches route markers.


Supplemental Plaques For Bicycle Route Signs (M7-1 Through M7-4) SUPPLEMENTAL PLAQUES FOR BICYCLE ROUTE SIGNS (M7-1 THROUGH M7-4)
Where desired, supplemental plaques may used with the Bicycle Route Sign (D11-1) to furnish additional directional guidance.  When used, the M4-11 through M4-13 signs should be mounted above the D11-1 sign, and the M7-1 through M7-7 signs should be mounted below the D11-1 sign.  The mirror image of the M7-1, M7-3, M7-4, M7-6, or M7-7 is also authorized.

Supplemental Plaques For Bicycle Route Signs (M7-5 Through M7-7) SUPPLEMENTAL PLAQUES FOR BICYCLE ROUTE SIGNS (M7-5 THROUGH M7-7)
Where desired, supplemental plaques may used with the Bicycle Route Sign (D11-1) to furnish additional directional guidance.  When used, the M4-11 through M4-13 signs should be mounted above the D11-1 sign, and the M7-1 through M7-7 signs should be mounted below the D11-1 sign.  The mirror image of the M7-1, M7-3, M7-4, M7-6, or M7-7 is also authorized.