1
Open the dock and tap Traffic Light
It drops in vertical or horizontal — whichever fits your board.
The dock · Keep calm
Traffic Light
Red, yellow, green — the whole room knows the mode.
One glowing light that answers the question students ask most: what are we supposed to be doing right now? Change it in a tap; the room adjusts without a word.
Also called: stoplight · red yellow green signal
- Free for teachers · no login required
Go — work away
One glance sets the room's expectations — no voice needed.
How it works
Three steps, zero setup
No setup screen, no import wizard — Traffic Light lives on the same board as everything else and it's running before the class has sat down.
2
Label the lights
Red might be 'silent work', green 'free discussion'. Your labels, your rules.
Tap to switch
One tap changes the light. The colour reads from the back row, so the class adjusts without you saying a thing.
Classroom ideas
Try it tomorrow
Three ways teachers actually run traffic light — steal one for tomorrow morning.
Lesson phases, colour-coded
Red is silent start, yellow partner whisper, green open discussion — the lesson's gears change without you announcing each one.
Help-desk status
During group work: green 'I'm circulating', yellow 'finishing with a group', red 'ask three before me'. Interruptions drop by half.
The yellow warning
Amber as the polite heads-up before any consequence. Most rooms correct at yellow — and nobody got named to get there.
The noise meter alone changed my afternoons. My Year 2s watch it like a game and keep themselves quiet — no nagging from me.
Same dock, one tap away 
Pairs well with
Every tool lives on the same board — these turn traffic light into a whole routine.
…and the rest of the dock is one tap away:
FAQ
Good to know
Can I add my own labels?
Yes — each light takes a short label shown beside it. 'Voices off', 'partner talk', 'ask three before me' — whatever your system is.
Vertical or horizontal?
Both. Stand it in a corner or lay it along the top of the board.
Can all the lights be off?
Yes — switch it to neutral when it's not in use, so the colours keep their meaning when they do light up.
Do I need an account to try it?
No — no login and nothing to install. Your board saves on this device; an account only matters for using it across devices.
Put a traffic light on your board
Open a board, tap the dock, and it's there. That's the whole setup.