Pick and Tick

Traffic-light timer

Runs in your browser. Nothing you type is sent anywhere.

Green

Green for 4 minutes, then amber for 1 minute, then red.

How to use the traffic-light timer

  1. Type how long green and amber should last, then press Set.
  2. Press Start, or the space bar. Green turns to amber, then red.
  3. Choose Manual to turn a light on yourself, by tapping it or pressing 1, 2, or 3.
  4. Press Full screen, or F, so the whole room can see the light.

Questions

How does the timed mode work?

Green lasts for the first time you set, then amber for the second, then red comes on and the alarm sounds. A short beep marks the change to amber. Set amber to 0 to go straight from green to red.

What is manual mode for?

Many teachers use a traffic light for noise levels (green for talking, amber for whispers, red for silence) or for "keep working, finish up, stop". In manual mode the timer is off and the light stays where you put it.

Can students see it from the back of the room?

Yes. In full screen the lamps fill the screen and the whole board is tinted the colour of the light that's on.

Does it keep time in a background tab?

Yes. The timer works out the light from your device's clock, so it stays right when the browser slows hidden tabs. On iPhone and iPad, keep this tab open.

What keyboard shortcuts are there?

Space starts and pauses the timed lights, R resets, F goes full screen, M turns sound on or off, and in manual mode 1, 2, and 3 turn on green, amber, and red.

Is anything sent to a server?

No. The timer runs in your browser. Your light times are remembered on this device only.