Turning: Practice Questions & Explanations

Most states allow a right turn on red after coming to a complete stop and verifying it is safe — but several specific conditions apply: come to a complete stop (rolling stops are illegal and frequently ticketed); yield to all approaching traffic from the left; yield to pedestrians in the crosswalk; check for cyclists in the bike lane to your right; obey any 'No Turn on Red' sign that overrides the default. Some states (notably New York City) prohibit right-on-red as a general default with exceptions only where signed. Even where allowed, right-on-red is optional — if you are uncertain or visibility is poor, waiting for the green is always safe.

Most US states permit a left turn on red only when both the street you are leaving and the street you are entering are one-way streets where the destination street's traffic moves to the right (in your direction). After a complete stop and yielding to all traffic and pedestrians, the left turn is allowed where state law permits and no sign prohibits it. A few states do not allow left-on-red at all; others allow it from a two-way street onto a one-way street. Check your specific state's rule. Even where permitted, left-on-red is unusual and not all drivers expect it; proceed with extra care. Posted signs override the default.

Left turn procedure: position your vehicle in the leftmost lane that permits left turns (which may be a dedicated turn lane or the leftmost through lane); signal at least 100 feet in advance (more on highways); come to a stop if required or yield to oncoming traffic if turning across opposite-direction traffic on a green light without arrow; complete the turn into the leftmost lane of the new road's same direction. Crossing over multiple lanes during the turn is illegal and dangerous — complete the turn cleanly into one lane, then change lanes after the turn if needed. Green-arrow signals give protected left turns where oncoming traffic is stopped; round green lights still require yielding to oncoming traffic.

A solid green arrow indicates a protected turn — oncoming traffic in conflicting directions has a red light, and the driver may proceed in the direction the arrow points without yielding (still yielding to pedestrians in the crosswalk). A flashing yellow arrow indicates that turning is permitted but the driver must yield to oncoming traffic and pedestrians (similar to a round green light for left turns). A red arrow prohibits turning in the direction of the arrow. A green ball light allows turning but requires yielding to oncoming traffic and pedestrians. Understanding signal arrows is important because their use is becoming more common as traffic engineers refine intersection design.

A right turn should generally begin from the lane nearest the right curb or edge of the road and end in the lane nearest the right curb on the street you are entering — keeping the turn tight and close to the right. Before turning, signal, check for pedestrians, cyclists, and traffic, and slow to a safe turning speed. Swinging wide or turning from the wrong lane can cause collisions and is improper. Left turns, by contrast, begin from the lane nearest the center line and should end in the appropriate lane on the cross street. Knowing correct lane use for turns is a standard rules-of-the-road topic.

Where right turn on red is permitted, you must first come to a complete stop at the red light, then yield to pedestrians in the crosswalk and to cross traffic, and turn right only when there is a safe gap and no sign prohibits the turn. A 'No Turn on Red' sign means you must wait for a green light. Some intersections and jurisdictions restrict or forbid right on red, so always check for signs. Treating the maneuver as 'stop, yield, then turn when safe' — not a rolling turn — is the correct approach. This is a commonly tested turning rule.

Backing up is risky because visibility behind the vehicle is limited, so before reversing you should walk around or otherwise check behind the vehicle for children, pedestrians, and obstacles, then look over your shoulder through the rear window (using mirrors and any backup camera as aids, not substitutes), back up slowly, and stop immediately if anything enters your path. Avoid backing into traffic or backing farther than necessary, and never rely on a camera or mirrors alone. Backing slowly while actively checking the path prevents the common, often serious collisions that occur in reverse. This is a standard rules-of-the-road safety practice.