Field Guide to American Traffic Signs:
Regulatory Signs
Stop
(R1-1)
1927
1930
1935
1948
1954
Although yellow stop signs are very rare to come by now, a few stick around. This rusty specimen was posted by a lot in Two Rivers, Wisconsin until 2010.
Yield
(R1-2)
1954
1961
1971
Speed Limit
(R2-1)
1927
1939
1948
1961
School Speed Limit
(S4)
1971
1999
Truck Speed Limit
(R2-2)
1961
Night Speed Limit
(R2-3)
1948
1961
Minimum Speed
(R2-4)
1961
Combination
(R2-4a)
1971
End Speed Limit
(R2-6; obsolete)
1930
1935
1939
1948
1961
End School Zone
(S5-2)
1988
Turn Prohibition
(R3-1,2)
1930
1935
1948
1961
1971
No Turns
(R3-3)
1935
1948
1961
No U Turn
(R3-4)
1935
1948
1961
1971
No Left or U Turn
(R3-18)
2003
No Straight Through
(R3-27)
2009
Lane Use (mandatory)
(R3-5,7)
1961
(overhead)
Lane Use (roundabout)
(R3-5)
2009
(alt.)
Lane Use (optional)
(R3-6)
1961
2003
Lane Use (combination)
(R3-8)
1961
2003
Lane Use (two way)
(R3-9)
1971
1978
(overhead)
H.O.V. Lane
(R3-11)
1978
2000
H.O.V. Lane Ahead
(R3-12)
1978
2000
2009
H.O.V. Lane Ends
(R3-12a)
1978
2000
2009
Bike Lane Ahead
(R3-16)
1978
2000
2003
Bike Lane
(R3-17)
1978
2000
2003
No Passing
(R4-1)
1935
1939
1948
1954
1961
End No Passing Zone
(R4-2)
1939
1948
1954
1961
Keep Right Except to Pass
(R4-3)
1931
1935
1948
1961
Keep Right (uphill traffic lanes)
(R4-5,6)
1961
(alt.)
Keep Right
(R4-7)
1930
1948
1961
(alt.)
1971
Do Not Enter
(R5-1)
1935
1948
1971
Wrong Way
(R5-1a)
1971
No Trucks
(R5-2,4)
1935
(alt.)
1948
(alt.)
1971
Vehicles With Lugs Prohibited
(R5-5)
1927
1935
1948
1971
No Motor Vehicles
(R5-3)
1935
1978
No Bicycles
(R5-6)
1971
One Way
(R6-1,2)
1930
1935
1942
1948
1961 (alt.)
Divided Highway Crossing
(R6-3)
1978
Roundabout
(R6-5)
2009
Begin One Way
(R6-6)
2009
End One Way
(R6-7)
1948
1961
No Parking (urban)
(R7)
1930
1935
1948
1961
1978
Parking Restriction
(R7-5, R7-2
n
)
1930
1935
1948
1961
2009
Parking Fee Station
(R7-20)
2009
Handicapped Parking
(R7-8)
1978
No Parking (rural)
(R8-1,2,3)
1927
1948
1961 (alt.)
1971
1978
No Stopping (rural)
(R8-5,6)
1931
1971
Emergency Parking Only
(R8-4)
1961
Emergency Stopping Only
(R8-7)
1961
Tracks Out of Service
(R8-9)
1987
No Pedestrians
(R5-10,9-3)
1961
1978
No Hitchhiking
(R9-4)
1948
1986
No Skaters
(R9-13)
2009
No Equestrians
(R9-14)
2009
Stop Here on Red
(R10-6)
1971
2003
Do Not Block Intersection
(R10-7)
1971
No Turn on Red
(R10-11)
1978
2000
2003
Left Turn Yield on Green
(R10-12)
1978
Keep Off Median
(R11-1)
1961
Road Closed
(R11-2)
1927
1935
1948
1961
Local Traffic Only
(R11-3,4)
1971
Weight Limit
(R12-1)
1927
1948
1961
1971
Axle Weight Limit
(R12-2)
1935
1961
Empty Weight Limit
(R12-3)
1971
Weight Limit (combination)
(R12-5)
1978
Truck Route
(R14-1)
1971
Hazardous Materials
(R14-2)
1987
2003
No Hazardous Materials
(R14-3)
1987
2003
National Network
(R14-4)
1989
National Network Prohibited
(R14-5)
1989
Railroad Crossing
(R15-1)
1935
1948
1971
Do Not Drive on Tracks
(R15-6)
2000
Divided Highway with Light Rail Crossing
(R15-7)
2000
Light Rail Only
(R15-4)
2000
Do Not Pass Light Rail
(R15-5)
2000