Be Prepared to Stop Sign: Meaning and What to Do
The yellow diamond reading BE PREPARED TO STOP warns that traffic ahead may be stopped or stopping where you cannot yet see it: beyond a hill, around a curve, at a signal with long queues, or at a crossing or intersection that backs up. It is often paired with a flashing beacon that activates when the signal ahead is red.
Be Prepared to Stop Sign
The sign addresses the rear-end crash, the most common kind there is. A driver who comes over a crest at speed into a stopped line of cars has no time left; the sign moves the decision earlier, to a point where slowing is still easy.
What to do when you see the be prepared to stop sign
Slow down, increase your following distance, cover the brake, and look as far ahead as the road allows for brake lights. If a beacon on the sign is flashing, assume the signal ahead is red and that traffic is stopped. Do not attempt to pass near the sign.
The signs it is confused with
Tests pair it with Stop Ahead, which warns of a stop sign, and with Signal Ahead, which warns of a traffic signal. Be Prepared to Stop is broader: it warns of stopped traffic for any reason, including a signal you cannot see yet.
Signs are one topic of ten on every test
Every state practice test covers signs, signals, and markings among its ten topics, with every answer explained. Pick your state and see how its exam asks about signs like this one; it is free, with no sign-up.
Choose your stateQuestions about the be prepared to stop sign
What does be prepared to stop mean?
Traffic ahead may be stopped or stopping where you cannot see it. Slow down, increase following distance, and be ready to brake.
What does the flashing light on the sign mean?
The signal ahead is red or about to turn red, so traffic is stopping. Treat it as a certainty that you will need to stop.
How is it different from stop ahead?
Stop Ahead warns of a stop sign. Be Prepared to Stop warns of stopped traffic for any reason: a signal, a queue, a crossing, or a work zone.
Why is it posted before hills and curves?
Because those are the places where a stopped queue is hidden until the last moment. The sign gives you the warning the road geometry takes away.
How does this sign appear on the written test?
As a meaning question and in following-distance scenarios about approaching hidden intersections and signals.