School Zone: Speed Limits, School Bus Lights and What Drivers Do

What It Means

A school zone is a signed section of road around a school where children are likely to be walking, crossing or getting on and off buses, and where a posted school zone speed limit may apply. The speed limit, the hours it's in force and the penalties for breaking it come from state and local law, so they differ from place to place. NHTSA's advice to drivers is to stay alert, slow down near schools, follow the school zone speed limit, and stop for school buses when the law requires it.

Try It: What Should You Do at This School Bus?

Pick what you see ahead of you. The answer follows NHTSA's school bus safety guidance.

You see

What to do

Slow down, watch for children and follow the posted school zone speed limit.

How Parents Say It

"Slow down, it's a school zone."
"The school sign is flashing, ease off the gas."
"Stop, the bus has its arm out!"

The Breakdown

Stage by stage at a school bus, per NHTSA

What you see	What drivers do
School zone sign, children around	Slow down, stay alert and follow the posted school zone speed limit
Bus with flashing yellow lights	The bus is preparing to stop: slow down and prepare to stop
Bus with flashing red lights and stop arm out	Stop and wait; children are getting on or off
Red lights off, arm in, bus moving	Start moving again, watching for children

Every state. NHTSA says it's illegal in every state to pass a school bus while its stop arm is out and its red lights are flashing.

For parents of walkers. Go over the route with your child, point out the school zone signs and the crossing points, and walk it together until you're sure they know it. That's Buhata's suggestion; a walking school bus is another way to make sure an adult is along.

When to talk to the school. Buhata's suggestion: if cars speed through the zone at drop-off, or a crossing feels unsafe, tell the school office so the people who run drop-off know about it.

Good to Know

School zone speed limits, the times they apply, and the fines for speeding there are set by state and local law, so no single number holds everywhere. Your state's driver handbook gives the rules where you live. NHTSA's back-to-school reminders ask every driver to slow down near schools and bus stops, whatever the posted limit.

FAQ

What does a flashing yellow light on a school bus mean?

The bus is preparing to stop to load or unload children. NHTSA says to slow down and get ready to stop.

When can I drive again after a school bus stops?

NHTSA says to wait until the red lights stop flashing, the stop arm is pulled back and the bus starts moving.

What is the speed limit in a school zone?

It depends on your state and town, which set school zone limits, hours and fines. Read the posted sign, and check your state's driver handbook for the rules.

Related Terms and Categories

Walking school bus
A group of children who walk to and from school together along a set route, supervised by one or more adults who take turns leading it.
Morning routine
A set series of steps you follow each morning, in the same order, to get yourself or your household up, ready and out the door on time.
After-school routine
The same set of steps a child follows between getting home from school and dinner, usually a snack, active play, some downtime and homework.

School and education for parents

Sources

National Highway Traffic Safety Administration, "School Bus Safety"; NHTSA, "Reducing the Illegal Passing of School Buses"; NHTSA, "NHTSA Urges Motorists to Drive Safely Near School Zones and Bus Stops"; NHTSA, "Consumer Alert: NHTSA Reminds Everyone to Drive Safely as Children Head Back to School"

Last updated October 1, 2026.

School zone