Classroom Noise Monitor🚦 Traffic Lights 🚦
When the class is quiet, the light stays green and the cars cruise across town, one by one. When it gets too loud, the light turns red and the traffic jams up!
Class goal: Park all nine cars before the lesson ends!
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Sound stays on this computer. Nothing is recorded or sent anywhere.
How Traffic Lights works
1. Switch on the signal
Pick a lesson length, press Green Light, Go!, and allow the microphone. The intersection takes a moment to learn your room's normal hum.
2. Quiet keeps it green
While the class works calmly the light stays green and nine little cars cruise across town one by one, each finding its spot in the parking garage.
3. Noise turns it red
A loud room flips the light to red and the traffic jams up, beeping until calm returns, but parked cars stay parked. Tip: challenge the class to park all nine cars before the lesson ends, with students taking turns as the traffic officer who calls out the light.
Explore more themes
Quiet Jungle
FREEKeep your class quiet and watch a jungle grow full screen! Trees grow when the classroom is calm and wilt when it gets too loud.
Dino Valley
FREEKeep your class quiet and hatch baby dinosaurs from their eggs! Too much noise wakes the volcano and scares the dinos back into their shells.
Bouncy Balls
PROThe classic bouncy balls noise meter, flipped to reward calm! Colorful playground balls bounce while your class stays quiet. Too much noise stops the fun and deflates them.
Pirate Treasure
PROKeep your class quiet and fill a pirate chest with treasure! The ship sails toward the island while the room stays calm, and a storm brews when it gets too loud.
Coral Reef
PROKeep your class quiet and watch a coral reef bloom full screen! Corals grow and fish arrive when the classroom is calm, and the reef bleaches when it gets too loud.
Train Journey
PROKeep your class quiet and ride a steam train across the countryside, station by station! The signal turns red and the train stops when it gets too loud.
Space Launch
PROKeep your class quiet to build, fuel and launch rockets to every planet! The countdown holds when the classroom gets too loud.
Fairy Village
PROKeep your class quiet and light up a fairy village of mushroom houses! Glowing windows and fireflies fill the glade, until the wind blows the lights out.
Castle Builders
PROKeep your class quiet and build a castle stone by stone! The builders stop and the scaffolding shakes when the classroom gets too loud.
Winter Aurora
PROKeep your class quiet to build a snowman and make the northern lights bloom! Too much noise kicks up a blizzard that blows the snow away.
Balloon Journey
PROKeep your class quiet and ride a hot air balloon from the fields to the stars! The balloon sinks when the classroom gets too loud.
Or head back to the classroom noise monitor homepage for the full overview and FAQ.
Traffic Lights questions
Is Traffic Lights free to use?
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Yes. Traffic Lights is one of the three themes included in the Free plan, with sessions of up to 30 minutes and no account required. Lifetime Pro (a one-time $20 payment) adds the other nine themes and unlimited session time.
Can the class lose progress in Traffic Lights?
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No. Traffic Lights never takes away progress the class has earned. Noise only pauses the work, so every milestone stays put even on a rowdy day.
What age group is Traffic Lights best for?
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Traffic Lights works from preschool through grade 5. Red, yellow, and green need no explanation: even the youngest students know what a red light means, which makes this the easiest theme to introduce.