South Dakota Road Sign Practice Test

How road signs are tested in South Dakota

Road sign questions are part of the South Dakota written knowledge test (25 multiple-choice questions, 20 right to pass). Know the signs well and those questions become easy points.

Signs from the South Dakota Driver License Manual (Revised November 2024). What every kind of sign means, by shape and color: our road sign guide.

Signs the South Dakota Driver License Manual adds

• Warning Signs

  The Y-intersection warning sign tells you the road ahead splits into two branches. p. 33

• Work Zone Signs

  The Signal Ahead sign warns of a traffic light ahead; be prepared to stop. p. 34

• Slow Moving Vehicle

  A reflective orange triangle on the back of a vehicle means it travels under 25 mph, such as farm or construction equipment. p. 36

• Rural Road Driving

  Watch for signs marking narrow or single-lane bridges; drivers take turns crossing, and generally the first driver to reach the bridge has the right-of-way. p. 67

• Traffic Signals

  You may turn right on a red light after a complete stop if it is safe and no sign forbids it; yield to all traffic, including pedestrians, bicyclists and cars, and stay in your lane as you turn. p. 32

• Regulatory Signs

  The No U-Turn sign (a U-shaped arrow crossed by a red circle and slash) means you may not make a U-turn there. p. 35

• Speed Limit Signs

  Some high-speed roads have minimum speed limits so slow vehicles don't become a hazard; you must go at least that fast, and if the minimum is too fast for you, use another road. p. 35

• Yield Sign

  A yield sign means slow down and yield to traffic in the intersection or on the road you are entering. p. 35

• Work Zone Signs

  In work zones, a person with a sign or flag may direct traffic to go a certain way, slow down or stop, and you must follow their instructions. p. 34

• Route Number Signs

  The shape and color of a route number sign show the kind of road: interstate, U.S., state, city, county or local. Plan a trip with a road map and follow the route signs so you don't get lost. p. 36

• Service Signs

  Blue signs mean: motorist services. p. 36

• Destination Signs

  Brown signs mean: recreation and cultural places. p. 36

• Railroad Crossing Warning Signs

  The round yellow sign with an X and RR comes before a railroad crossing; it tells you to slow, look and listen for trains or railroad vehicles and to be ready to stop if one is coming. p. 33

• Warning Signs

  The bicycle crossing warning sign warns that bicyclists may cross the road ahead. p. 33

• Railroad Emergency Notification System (ENS)

  Every railroad crossing has an emergency phone number for reporting problems with the crossing, tracks or a train; it is usually on a blue sign on or near the crossing, along with a DOT number that identifies the crossing's location. p. 34

• Warning Signs

  Diamond-shaped signs warn of hazards or special conditions ahead. p. 33

• Stop Sign

  An eight-sided (octagon) sign always means stop. p. 35

• Yield Sign

  A downward-pointing triangle sign means yield. p. 35