Correct answer: D. Car A, because it stopped first

At a four-way stop the order of arrival decides the order of departure. The yield-to-the-right rule only settles a tie, and here there is no tie: A stopped first, so A goes first.

Correct answer: A. Car A must yield to car B, which is on its right

With no signs or signals and a genuine tie, the driver on the left yields to the driver on the right. B is to A’s right, so A waits. Make eye contact before moving, because the other driver may not know the rule.

Correct answer: D. Yield to B and turn only when there is a safe gap

A left-turning driver always yields to oncoming traffic going straight. A green light permits the turn but grants no priority. Wait with the wheels straight, so a rear-end hit does not push you into oncoming traffic.

Correct answer: B. Yield to B and enter when there is a safe gap

Traffic already in the circle has the right-of-way. Slow on approach, look to your left, and enter in a gap. US roundabouts run counterclockwise, and you should never stop once you are inside one.

Correct answer: D. Car A, because its road ends at the intersection

Traffic on a terminating road yields to traffic on the through road unless signs or signals say otherwise. A must wait for a gap in both directions before entering.

Correct answer: C. Both car A and car B

On an undivided road, traffic in both directions must stop and stay stopped until the lights go off and the arm folds in. Children may cross in front of the bus where neither driver can see them.

Correct answer: B. Continue with care, because a physical median separates the roadways

Most states exempt drivers separated from the bus by a raised median or barrier. A painted line is not a divider, so on an undivided road you would still have to stop. New York requires the stop either way, so check your own state rule.

Correct answer: C. Toward the curb

Facing downhill, turn the wheels toward the curb so a rolling car catches on it instead of drifting into traffic. Set the parking brake and leave an automatic in park, or a manual in reverse.

Correct answer: B. Away from the curb, so the car rolls back against it

Facing uphill, turn the wheels away from the curb and let the car roll back a few inches until the tire rests against it. The curb then blocks any further movement.

Correct answer: A. Toward the edge of the road, so a rolling car leaves the roadway

With nothing to catch the tire, aim the wheels so a runaway car heads off the road rather than into traffic. This applies whether you are facing uphill or downhill.

Correct answer: A. Car B, because the line on its side is broken

The line on your own side of the center governs your permission. B has a broken line and may cross to pass when the way is clear. A has a solid line, meaning its sight distance is inadequate, so A may not pass.

Correct answer: A. Left turns from either direction, but not for travelling along

This is a two-way left-turn lane. Drivers from both directions share it to prepare for a left turn, so travelling along it risks a head-on meeting. Enter it only shortly before your turn.

Correct answer: C. Yield to the cyclist, and where the law allows, merge into the bike lane before turning

This is the right hook, one of the most common bicycle collisions. Check the mirror and blind spot, let the cyclist clear, and where merging into the bike lane before the corner is permitted, do it: that removes the crossing conflict entirely.

Correct answer: D. Along the right side of the trailer

The right-side no-zone runs most of the trailer length and is the worst of the four. A useful rule: if you cannot see the driver’s face in the truck’s mirror, they cannot see you.

Correct answer: B. At least three seconds

When the vehicle ahead passes a fixed object, count until you reach it. Three seconds is the minimum in good conditions, and you should add a second for each adverse factor such as rain, night, or following a large vehicle.

Correct answer: B. Change lanes away from the stopped vehicle, or slow down if changing lanes is not safe

Vacate the lane next to the stopped vehicle when you safely can. If traffic makes that impossible, slow well below the posted limit as you pass. The law covers police, fire, EMS, tow trucks, and highway maintenance crews.

Correct answer: A. 20 feet from the crosswalk and 15 feet from the hydrant

Twenty feet from a crosswalk and fifteen from a hydrant are the common figures. The crosswalk clearance keeps pedestrians visible to turning drivers, and the hydrant clearance lets a fire crew reach it and run hose.

Correct answer: C. Car B, because it is to the right of car A

A genuine tie is broken by the yield-to-the-right rule, so B would go first. Order of arrival always takes precedence; the right-hand rule exists only for when arrival order cannot separate the drivers.

Correct answer: C. It should increase to at least four to five seconds

Wet pavement lengthens braking distance and rain shortens how far ahead you can see, so add at least one second per adverse factor. Traction is worst in the first minutes of rain, before the oil film washes away.

Correct answer: D. Counterclockwise, exiting from the outer lane

US roundabouts run counterclockwise. Stay in the outside lane if you are leaving at the first or second exit, signal right as you approach your exit, and yield to pedestrians in the crosswalk on the way out.