South Dakota permit test: school buses & emergency vehicles
Stopping for school buses, yielding to emergency vehicles and move-over laws. 6 questions.
A stopped emergency vehicle ahead is using red lights. Under South Dakota law, what must approaching drivers do, from any direction?
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Sample school buses & emergency vehicles questions
A stopped emergency vehicle ahead is using red lights. Under South Dakota law, what must approaching drivers do, from any direction?
- A Slow to 20 mph below the limit and keep driving
- B Stop only if it is in your lane of travel
- C Come to a complete stop before reaching it, then proceed with caution when safe
- D Change lanes if possible, without stopping
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C. Come to a complete stop before reaching it, then proceed with caution when safe
South Dakota law requires all motorists, from any direction, approaching a stopped emergency vehicle using red lights to come to a complete stop before reaching it. They may then proceed with caution only after making sure it is safe, unless directed otherwise.
On an interstate with two lanes in your direction, you approach a stopped tow truck using amber lights. What does South Dakota's move-over law require?
- A Merge into the far lane at least 100 feet before it
- B Merge into the lane farthest from it at least 300 feet before reaching it
- C Stop completely before passing it
- D Nothing, because the law covers only police cars
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B. Merge into the lane farthest from it at least 300 feet before reaching it
When a stopped vehicle uses amber, yellow or blue warning lights on a road with two or more lanes in your direction, merge into the lane farthest from it at least 300 feet before reaching it and proceed with caution. This protects tow operators, highway crews and officers.
On a two-lane highway, you approach a stopped vehicle using amber warning lights. How much must you slow down?
- A To at least 20 mph below the posted limit
- B To 5 mph, whatever the posted limit is
- C To at least 10 mph below the posted limit
- D To 25 mph, whatever the posted limit is
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A. To at least 20 mph below the posted limit
On two-lane highways, at least 300 feet before the stopped vehicle, you must slow to at least twenty miles per hour below the posted limit (or to 5 mph where the limit is 20 mph or less) and proceed with caution.

View diagram
On a two-lane road with one lane in each direction, a school bus has stopped with its red lights flashing and its stop arm out. Which drivers must stop?
- A Only drivers behind the bus
- B Only drivers coming toward the front of the bus
- C No one, if no children are visible near the bus
- D Drivers coming from both directions
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D. Drivers coming from both directions
On a road with one lane each way, drivers approaching from both directions must stop at least 15 feet from a school bus with its red lights flashing and stay stopped until the red lights go off. Only oncoming drivers on a highway with two or more lanes each way, or on a separate roadway, are excused.
Source: South Dakota Department of Public Safety, Driver Licensing Program website