Safe Driving Responses to Signs and Signals
Signs only matter if the response is right. This domain tests the translation from perception to action: scan far enough ahead to identify a sign, decide early, and execute smoothly - with correct behavior at stop signs, yellow lights, crosswalks, railroad crossings and school buses.
Scanning and identification
Look 12–15 seconds ahead in the city and further on faster roads. Identify by shape and color first, then read the legend and any plaque. A sign read at the last second forces a choice between a hard stop and a dangerous lane change.
Stop and yield routines
At a stop sign: check the mirror, release the accelerator, brake to a full stop behind the line, look left-right-left, then proceed when clear. At a yield sign, approach slowly enough to stop if needed. When turning right on red, stop first, then check for pedestrians in the crosswalk, cyclists and cross traffic before moving.
Signal decisions
A steady yellow means stop if you can do so safely. If you are too close to stop without hard braking, proceed through the intersection without accelerating. Do not treat yellow as a signal to speed up.
Vulnerable users and special vehicles
Yield to pedestrians in crosswalks - DC law requires drivers to stop for them - and give cyclists room. Stop for a school bus flashing red lights unless you are on the opposite side of a divided highway separated by a median. At a railroad crossing, stop when lights flash or gates lower, and never stop on the tracks.
Worked example
A driver approaches a stale green light at 30 mph on a wet road as it turns yellow; a car is close behind. The driver has room to stop. Correct action: brake firmly and smoothly to stop before the stop bar. Yellow means stop unless stopping is unsafe; the wet road lengthens stopping distance, so the decision must come earlier, not later, and the following car is a reason for smooth early braking rather than for running the light.
Traps
Accelerating on yellow; rolling stops; turning right on red without looking for pedestrians; and following a large truck so closely that you cannot see the sign or signal ahead.