The Andrew Turnbull Network


Field Guide to American Traffic Signs:

Warning Signs

Turn (W1-1)
[Turn]
1927
[Turn]
1935
[Turn]
1948
Curve (W1-2)
[Curve]
1927
[Curve]
1935
[Curve]
1948
Reverse Turn (W1-3)
[Reverse Turn]
1948
Reverse Curve (W1-4)
[S Curve]
1931
[Reverse Curve]
1935
[Reverse Curve]
1948
Winding Road (W1-5)
[Winding Road]
1927
[Winding Road]
1948
Large Arrow (W1-6)
[Large Arrow]
1948
Large Arrow (double-headed) (W1-7)
[Large Arrow]
1948
Chevron Alignment (W1-8)
[Chevron Alignment Device]
1978
Hairpin Curve (W1-11)
[Hairpin Curve]
2003
270-degree Loop (W1-15)
[270-degree Loop]
2003
Cross Road (W2-1)
[Cross Road]
1927
[Cross Street]
1930
[Cross Road]
1935
[Cross Road]
1948
Side Road (W2-2)
[Side Road]
1927
[Side Road]
1935
[Side Road]
1948
Side Road (oblique) (W2-3)
[Side Road]
1948
T Junction (W2-4)
[T Junction]
1935
[T Junction]
1948
Y Junction (W2-5)
[Y Junction]
1948
Traffic Circle or Roundabout (W2-6)
[Traffic Circle]
2000
[Traffic Circle]
2003
Stop Ahead (W3-1)
[Stop Sign Ahead]
1935
[Stop Ahead]
1948
[Stop Ahead]
1978
Yield Ahead (W3-2)
[Yield Ahead]
1961
[Yield Ahead]
1978
Signal Ahead (W3-3)
[Traffic Signals Ahead]
1935
[Signals Ahead]
1948
[Signal Ahead]
1961
[Signal Ahead]
1971
Be Prepared to Stop (W3-4)
[Be Prepared to Stop]
2003
Speed Reduction (W3-5)
[Slow to 25 Miles]
1935
[Speed Zone Ahead]
1948
[Speed Zone Ahead]
1961
[Reduced Speed Ahead]
1971
[Reduced Speed 30 Ahead]
(alt.)
[Reduced Speed 35]
1978
[Speed Limit 45 Ahead]
2003
Draw Bridge (W3-6)
[Draw Bridge]
1927
[Draw Bridge]
1948
Merging Traffic (W4-1)
[Merging Traffic]
1961
[Merge]
1971
Added Lane (W4-3)
[Added Lane]
1978
Lane Ends (W4-2)
[Right Lane Ends]
1961
[Right Lane Ends]
1971
[Right Lane Ends]
2003
Road Narrows (W5-1)
[Narrow Road]
1927
[Narrow Road]
1948
[Pavement Narrows]
(alt.)
[Road Narrows]
1961
Narrow Bridge (W5-2)
[Narrow Bridge]
1927
[Narrow Bridge]
1948
[Narrow Bridge]
1978
One Lane Bridge (W5-3)
[One Lane Bridge]
1935
[One Lane Bridge]
1948
Divided Highway (W6-1)
[Divided Highway Ahead]
1948
[Divided Highway]
1961
[Divided Highway]
1971
Divided Highway Ends (W6-2)
[Divided Highway Ends]
1948
[Divided Highway Ends]
1971
Two Way Traffic (W6-3)
[Two Way Traffic]
1961
[Two Way Traffic]
1971
Hill (W7-1)
[Hill]
1927
[Hill Shift Gear]
(alt.)
[Hill]
1935
[Hill]
1971
Hill Blocks View (W7-6)
[Hill Blocks View]
2003
Bump (W8-1)
[Bump]
1948
Dip (W8-2)
[Dip 300 ft]
1927
[Dip]
1935
[Dip]
1948
Pavement Ends (W8-3)
[Pavement Ends]
1927
[Pavement Ends]
1935
[Pavement Ends]
1948
[Pavement Ends]
1978
Soft Shoulder (W8-4)
[Soft Shoulders]
1927
[Soft Shoulders]
1935
[Soft Shoulders]
1948
[Soft Shoulder]
1961
Slippery When Wet (W8-5)
[Slippery When Wet]
1935
[Slippery When Wet]
1948
[Slippery When Wet]
1971
[Slippery When Wet]
1978
[Slippery When Wet]
2003
Loose Gravel (W8-7)
[Loose Gravel]
1927
[Loose Gravel]
1935
[Loose Gravel]
1948
Rough Road (W8-8)
[Rough Road]
1935
[Rough Road]
1948
Low Shoulder (W8-9)
[Low Shoulder]
1961
No Center Stripe (W8-12)
[No Center Stripe]
2003
Bridge Ices Before Road (W8-13)
[Bridge Ices Before Road]
2003
Fallen Rocks (W8-14)
[Slides]
1948
[Falling Rock]
1961
[Fallen Rocks]
2009
Shoulder Drop-off (W8-17)
[Shoulder Drop-off]
2009
Railroad Advance Warning (W10-1)
[Railroad Advance Warning]
1927
[Railroad Advance Warning]
(Two tracks)
[Railroad Advance Warning]
1935
[Railroad Advance Warning]
1948

[Railroad Advance Warning photo]
Railroad crossing in Shenandoah National Park, Virginia; circa 1940. Library of Congress photo.
Parallel Railroad Crossing (W10-2,3,4)
[Parallel Railroad Crossing]
1983
[Parallel Railroad Crossing]
1983
[Parallel Railroad Crossing]
1983
Low Ground Clearances (W10-5)
[Low Ground Clearances]
1997
Angled Railroad Crossing (W10-12)
[Angled Railroad Crossing]
2003
Bicycle Crossing (W11-1)
[Bicycle Crossing]
1971
[Bicycle Crossing]
1999
Pedestrian Crossing (W11-2)
[Cross Walk]
1935
[Pedestrian Crossing]
1948
[Pedestrian Crossing]
1971
[Pedestrian Crossing]
1998
[Pedestrians]
2000
Deer Crossing (W11-3)
[Deer Crossing]
1948
[Deer Crossing]
1971
[Deer Crossing]
2003
Cattle Crossing (W11-4)
[Cattle Crossing]
1948
[Cattle Crossing]
1971
Farm Machinery (W11-5)
[Farm Machinery]
1971
[Farm Machinery]
1997
Snowmobile Crossing (W11-6)
[Snowmobile Crossing]
1980s?
[Snowmobile Crossing]
2003
Equestrian Crossing (W11-7)
[Bridle Path]
1935
[Bridle Path]
1948
[Equestrian Crossing]
1980s?
Fire Station (W11-8)
[Fire Station]
1980s?
Handicapped Crossing (W11-9)
[Handicapped Crossing]
1980s?
[Handicapped Crossing]
2009
Truck Crossing (W8-6,11-10)
[Truck Crossing]
1948
[Truck Crossing]
1980s?
[Truck Crossing]
2003
Golf Cart Crossing (W11-11)
[Golf Cart Crossing]
1997
Horse-Drawn Vehicle Crossing (W11-14)
[Golf Cart Crossing]
2003
Trail Crossing (W11-15)
[Trail Crossing]
2009
Bears Crossing (W11-16)
[Bears Crossing]
2009
Sheep Crossing (W11-17)
[Sheep Crossing]
2009
Bighorn Sheep Crossing (W11-18)
[Bighorn Sheep Crossing]
2009
Donkey Crossing (W11-19)
[Donkey Crossing]
2009
Elk Crossing (W11-20)
[Elk Crossing]
2009
Moose Crossing (W11-21)
[Moose Crossing]
2009
Wild Horses Crossing (W11-22)
[Wild Horses Crossing]
2009
Double Arrow (W12-1)
[Safety Zone]
1930
[Safety Zone]
1935
[Double Arrows]
1948
[Double Arrows]
1961
Low Clearance (W12-2)
[Low Bridge]
1927
[Low Clearance]
1948
[Low Clearance]
1971
Advisory Exit Speed (W13-2,3)
[Exit 25 MPH]
1971
[Ramp 30 MPH]
1971
Dead End (W14-1,2)
[Dead End]
1971
[No Outlet]
(alt.)
No Passing Zone (W14-3)
[No Passing Zone]
1971
Limited Sight Distance (W14-4)
[Limited Sight Distance]
1978
Playground (W15-1)
[Playground]
1935
[Playground]
1948
[Playground]
1978
[Playground]
2000
Speed Hump (W17-1)
[Speed Hump]
2000
School (S1-1)
[School Zone]
1927
[School Zone]
1930
[School]
1935
[School]
1948
[School]
1971
[School]
1998
School Crossing (S2-1)
[School Crossing]
1948
[School Crossing]
1971
[School Crossing]
1998
[School Crossing]
2000
School Bus Stop Ahead (S3-1)
[School Bus Stop Ahead]
1971
[School Bus Stop Ahead]
1998
Road Construction Ahead (W20-1; obsolete)
[Road Construction Ahead]
1961
[Road Construction Ahead]
1971
Road Work Ahead (W20-1)
[Road Work]
1935
[Road Work Ahead]
1961
[Road Work Ahead]
1971
Detour Ahead (W20-2)
[Begin Detour 400 ft]
1927
[Detour Ahead]
1935
[Detour Ahead]
1961
[Detour Ahead]
1971
Road Closed Ahead (W20-3)
[Road Closed Ahead]
1961
[Road Closed Ahead]
1971
One Lane Road Ahead (W20-4)
[One Lane Road Ahead]
1961
[One Lane Road Ahead]
1971
Center Lane Closed (W9-3)
[One Lane Road Ahead]
2003
Flagger Ahead (W20-7)
[Flagman Ahead]
1961
[Flagman Ahead]
1971
[Flagger Ahead]
1978
Workers (W21-1)
[Men Working]
1927
[Men Working]
1935
[Men Working]
1948
[Men Working]
1971
[Workers]
1978
Fresh Oil/Tar (W21-2)
[Fresh Oil]
1927
[Fresh Oil]
1935
[Fresh Oil]
1948
[Fresh Oil]
1971
[Fresh Tar]
(alt.)
Road Machinery Ahead (W21-3)
[Road Machinery Ahead]
1961
[Road Machinery Ahead]
1971
Shoulder Work (W21-5)
[Shoulder Work Ahead]
1961
[Shoulder Work]
1971
Survey Crew (W21-6)
[Survey Party]
1961
[Survey Crew]
1971
Blasting Zone Ahead (W22-1)
[Blasting Zone Ahead]
1971





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Last update November 28, 2010.