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National Driver Training Institute

Signs by Category:

Freeway Entrance Signs Road Symbol Signs
Guide Signs Motorist Service & Recreation Signs
Hover Lane Markings Temporary Traffic Control Signs
Intersection Markings Two-Way Traffic Markings
Lights Warning Signs
Misc. Lane Markings Work Zone Pavement Markings
Railroad & Light Trail Transit Signs Yield Markings
Regulatory Signs  

The Shape - and Color - Give Us a Sign

WARNING signs alert drivers to existing or potentially hazardous road conditions. Click here to see more warning signs.

Several warning signs help drivers anticipate sharp turns or curves in the road.

Usually diamond-shaped and yellow, warning signs caution drivers that the road is slippery when wet; there is an intersection ahead, the lanes narrow, or there may be bicyclists, farm animals, or wildlife on or near the roadway.

The pentagon shape with the point to the top warns us to watch for school children. The new optional color for these signs — fluorescent yellow-green — is much easier to see in low light and foggy/rainy weather.

Pay attention to the round yellow WARNING sign — there’s a railroad crossing ahead.

Yellow pennant-shaped signs caution motorists where passing is unsafe.
MOTORIST SERVICE SIGNS- Click here to see more Motorist Service Signs.

Blue rectangle or square SERVICE signs are a welcome sight for travelers who need a break from the road. We look for these signs to help us find service stations, places to eat, rest areas, phones, and overnight facilities. The handicapped-accessible sign is one of the most inviting for disabled travelers.
REGULATORY signs instruct drivers to do — or not do — something. Click here to see more Regulatory Signs.

A crossbuck indicates the railroad crossing.

Black and white rectangular regulatory signs control lane use. For example, the turn-ONLY turn lane or when you must keep right or left of a median. They also assign truck weight limits for certain roadways and tell drivers the direction of traffic.

A rectangular white sign with green letters indicates that parking is permitted with restrictions.

We all know that the octagon shape means STOP.

A rectangular white sign with red letters indicates that parking is restricted or prohibited.

The red triangle means YIELD, because someone other than you has the right-of-way.

A red circle with a slash communicates the do not’s — enter, turn, U-turn, pedestrians, or parking.
RECREATION AND CULTURAL INTEREST SIGNS. Click here to see more Recreation Signs.

Brown RECREATION signs direct us to areas of public recreation and cultural interest. In addition to swimming, skiing, boating, and fishing areas, these signs also direct us to the services in recreation areas, including first aid, post office, and food service.
GUIDE signs come in a variety of shapes and colors — each one with an important message to help drivers arrive at their destinations safely. Click here to see more Guide Signs.

Square black and white markers specify U.S. routes and most State routes. Some States design their own markers, which often reflect their individuality.

The pentagon-shaped blue and yellow markers are used for county routes in some states.

The green and white “mile markers” help us gauge how far we’ve driven, or how far we need to drive, through a state.

Green GUIDE signs direct travelers to the right exit to cities, airports, park-and-ride stations, and other destinations. Green signs also mark bicycle routes.

The familiar red, white, and blue shield tells drivers they are traveling on an Interstate Highway. Even-numbered roads with 2 digits run east-west; north-south Interstates have odd numbers with 2 digits. Interstate routes with 3 digits are beltways, loops or spur routes.

CONSTRUCTION signs are orange diamonds specifically used only to WARN drivers about construction and work zone activity. And don’t forget to slow down and give road crews a 'brake'!
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