20 questions from the Illinois Rules of the Road (DSD A 112). Pick an answer to see the rule behind it.
1. What action is required when encountering a flashing yellow arrow?
Answer: Turn in the direction pointed after yielding the right of way to pedestrians and vehicles. The handbook defines the flashing yellow arrow as permission to turn after yielding to pedestrians and vehicles.
Illinois Rules of the Road (DSD A 112), page 85: “Yellow Arrow (flashing) — The flashing yellow arrow means you may turn in the direction the arrow is pointed after yielding the right of way to any pedestrians and vehicles in the intersection or crosswalk.”
2. How should a driver use hand and arm signals to indicate a right turn?
Answer: Extend the left arm straight up. The handbook specifies that for a right turn, the hand and arm are extended straight up.
Illinois Rules of the Road (DSD A 112), page 36: “For a right turn, the hand and arm are extended straight up.”
3. In an all-way stop scenario, which driver proceeds first?
Answer: The first driver to stop. The rule for all-way stops states that priority is given to the driver who stops first.
Illinois Rules of the Road (DSD A 112), page 72: “The first driver to stop is the first driver to go.”
4. What is the rule regarding passing in construction zones in Illinois?
Answer: All construction zones are no passing zones. The handbook clearly states that all construction zones in Illinois are designated as no passing zones.
Illinois Rules of the Road (DSD A 112), page 35: “All construction zones in Illinois are no passing zones.”
5. What is the recommended action if the fog becomes too dense while driving?
Answer: Pull off the roadway and stop. The handbook instructs drivers to pull off the road and stop when visibility is severely reduced by dense fog.
Illinois Rules of the Road (DSD A 112), page 91: “If the fog is too dense, pull off the roadway and stop. Do not drive at 5-10 mph.”
6. When encountering an organized funeral procession, which action is prohibited for a motorist?
Answer: Driving between vehicles in the procession. The handbook instructs drivers not to cut through or drive between vehicles in a funeral procession unless directed by police.
Illinois Rules of the Road (DSD A 112), page 32: “Motorists should NOT drive between vehicles in an organized funeral procession except when directed by a law enforcement officer.”
7. When parking parallel on a street with two-way traffic, how close must your right-hand wheels be to the curb?
Answer: Within 12 inches. The handbook states that parallel parking on two-way streets requires the right-hand wheels to be within 12 inches of the curb.
Illinois Rules of the Road (DSD A 112), page 41: “When parking on streets with two-way traffic, park so the right-hand wheels are parallel to and within 12 inches of the curb.”
8. When must a driver stop at a railroad crossing equipped with flashing light signals?
Answer: When lights begin to flash, until they stop flashing. The rule requires stopping as soon as the lights begin to flash and remaining stopped until the lights cease flashing.
Illinois Rules of the Road (DSD A 112), page 88: “Flashing Light Signals — When lights begin to flash, you must always stop until the train has passed and the lights have stopped flashing.”
9. What action is required when approaching a MERGE sign with through traffic?
Answer: Increase or decrease speed to avoid a crash. The rule specifies adjusting speed to merge safely rather than stopping completely or ignoring traffic flow.
Illinois Rules of the Road (DSD A 112), page 32: “When approaching a MERGE sign with through traffic. You must increase or decrease speed to avoid a crash.”
10. When passing a bicyclist on any road, including a bicyclist on the road shoulder or in a dedicated bicycle lane, what is the minimum distance you must keep between your vehicle and the bicyclist?
Answer: 3 feet. The handbook states that a minimum distance of 3 feet is required when passing bicyclists.
Illinois Rules of the Road (DSD A 112), page 34: “When passing a bicyclist on any road, including a bicyclist on the road shoulder or in a dedicated bicycle lane, keep a minimum distance of 3 feet from the bicyclist.”
11. How does doubling your speed affect your vehicle's stopping distance?
Answer: It quadruples the stopping distance. The handbook states that increasing speed by double results in a fourfold increase in stopping distance.
Illinois Rules of the Road (DSD A 112), page 91: “Doubling your speed quadruples your vehicle’s stopping distance.”
12. How should a driver open their vehicle door to safely check for bicyclists?
Answer: Using the right hand to force the upper body to turn and look behind. Using the right hand forces the driver's body to turn, providing a better view of oncoming cyclists.
Illinois Rules of the Road (DSD A 112), page 49: “Drivers should consider reaching with their USE YOUR RIGHT HAND, right hand to open the vehicle door as this gives them LOOK FOR BIKES a better opportunity to check their surroundings for Using your right hand to open oncoming vehicles and bicyclists.”
13. How far in advance does a school bus give a warning before stopping in rural areas?
Answer: 200 feet. The handbook specifies that the warning distance is increased to 200 feet specifically for rural areas.
Illinois Rules of the Road (DSD A 112), page 39: “A warning will be given by the school bus at least 100 feet (200 feet in rural areas) in advance of a stop.”
14. What action is required when you see a diamond-shaped sign?
Answer: Slow down and use caution. The handbook states that diamond-shaped signs are warning signs and instruct drivers to slow down and use caution upon seeing them.
Illinois Rules of the Road (DSD A 112), page 70: “Slow down and use caution when you see this type of sign.”
15. According to the handbook, what is the primary purpose of signs that are colored yellow?
Answer: They are used for warning signs to tell you of road conditions and dangers ahead. The handbook defines yellow signs as warning signs used to indicate road conditions and dangers.
Illinois Rules of the Road (DSD A 112), page 71: “YELLOW is used for warning signs. These signs tell you of road conditions and dangers ahead.”
16. When returning to your lane after passing another vehicle on a two-lane highway, how far from an oncoming vehicle must you be?
Answer: Before getting within 200 feet of an oncoming vehicle. The handbook sets a specific minimum distance of 200 feet to ensure safe re-entry into the lane.
Illinois Rules of the Road (DSD A 112), page 34: “You must return to your lane before getting within 200 feet of an oncoming vehicle.”
17. What is the correct procedure if your vehicle stalls on railroad tracks?
Answer: Get out immediately, call 911, and move away at a 45-degree angle in the direction of the train. The handbook specifies exiting immediately, calling 911, and moving at a 45-degree angle in the direction of the train to avoid debris.
Illinois Rules of the Road (DSD A 112), page 39: “If your vehicle becomes disabled and is stuck or stalls on railroad tracks, everyone in the vehicle should get out immediately, call 911, and move away from the tracks at a 45-degree angle in the direction of the train.”
18. What alcohol concentration level triggers a Zero Tolerance Violation suspension for a person under age 21?
Answer: Greater than 0.00, but less than 0.08. The handbook defines a Zero Tolerance Violation for those under 21 as having an alcohol concentration greater than 0.00 but less than 0.08.
Illinois Rules of the Road (DSD A 112), page 66: “Zero Tolerance Violation — Having an alcohol concentration of greater than 0.00, but less than 0.08, by a person under age 21.”
19. When parking on a street with curbing and facing downhill, how should you position your front wheels?
Answer: Turn the front wheels toward the curb. The handbook instructs drivers facing downhill with a curb to turn wheels toward the curb to ensure the vehicle rolls into it if it moves.
Illinois Rules of the Road (DSD A 112), page 40: “If you park on a street with curbing and your vehicle is facing downhill, turn the front wheels toward the curb so your vehicle will roll toward the curb.”
20. According to the handbook, when does the reduced speed limit apply in a posted school zone?
Answer: Only when children are present, a hazard exists, or a light is flashing on school days. The rule specifies that the reduced speed is conditional on school days with children present, existing hazards, or flashing lights, rather than being a fixed time-only rule.
Illinois Rules of the Road (DSD A 112), page 76: “The posted speed applies only on school days when children are present (usual school hours are from 6:30 a.m. to 4 p.m., but hours may vary), where a potential hazard exists because of the children’s close proximity to traffic, or when a light is flashing.”