Traffic Light Timer
A Traffic Light countdown timer turns green, amber and red as the time runs down, so the whole class sees the warning without anyone looking at a watch. This page opens the timer already set to 5:00, so you press start and the light changes on its own.
A countdown that changes colour the way a traffic light does, so everybody knows how much time is left without asking.
How to Use the Traffic Light Countdown Timer
Open the traffic light timer
This page opens a five minute countdown with the colour zones already on. Press start and the light turns green.
Explain the colours
Green means keep going, amber means finish, red means stop. The class only needs telling once.
Put it on the big screen
Press F for fullscreen on a projector or a smartboard so the colour is visible from every seat.
The bell closes it
The alert rings when the light turns red, so the end of the activity is always announced the same way.
Why Use This Traffic Light Timer
Green, amber and red on their own
The display changes colour as the time runs down, so the warning reaches the whole room at once.
Nobody has to be the bad guy
The clock gives the instruction instead of the teacher, and a class accepts a clock much faster than a person.
The overtime stays on screen
When the time runs out the timer keeps counting, so you can see how far the activity has gone over.
Any length you need
Five minutes is what this page opens with, but the same timer covers two minutes of tidying up or a whole lesson.
Where This Timer Helps
Every teacher has used the same three signals: green means keep going, amber means wrap it up, red means stop. A traffic light timer puts those three signals on the screen and lets the clock change them, so the class reads the same message at the same moment and nobody has to be the person who says it.
This traffic light timer opens a five minute activity with the colour zones already on. Green while there is time, amber in the last stretch, red when the activity is over, and the bell rings at zero. It works the same way for reading rounds, tidy up time, group work or a timed game.
Tips for making the most of it
- Say the colour names out loud the first time you use it, so the class knows what amber means.
- Use the subtitle for the name of the activity, so the colour change always has a context.
- Leave the display visible for the whole activity instead of hiding the interface halfway through.
Traffic Light Timer: Frequently Asked Questions
What is a traffic light timer?
It is a countdown that shows the remaining time as a colour: green while there is time, amber when the activity should be finishing and red when it is over. It is used mostly in classrooms, with reading rounds, tidy up time and timed group work.
How long should the green light last?
It depends on the activity. Five minutes is what this page opens with, because it suits a reading round or a short task. Set two minutes for tidying up and ten or fifteen for a longer group activity.
Can I use it in a sports hall?
Yes. It is a plain full screen countdown with colours, so it works for any timed activity where you want the room to see the same clock. The bell rings at zero so you do not have to watch the screen.
Other Countdown Timer Lengths
Need a different duration? Every one of these opens the same timer with the length already set.
Visual timer
A countdown you can read from anywhere in the room, with a bell when the time is up.
Quiz timer
One minute per question, on a full screen, with a bell that tells you when the answer time is over.
5 minute timer
Five minutes is the most useful short interval there is. It is long enough to get something done and short enough to actually do it.
1 minute timer
A single minute, counted down on screen as large as you need. Press start and the digits fill the screen.
All Countdown Timer Lengths
| Duration | Countdown timer | Best for |
|---|---|---|
| 1:00 | 1 minute timer | Quick tasks and speed rounds |
| 2:00 | 2 minute timer | Short transitions and quick reviews |
| 3:00 | 3 minute timer | Timeboxing a small task |
| 5:00 | 5 minute timer | Pomodoro breaks and quick reviews |
| 10:00 | 10 minute timer | Short focus blocks and power naps |
| 15:00 | 15 minute timer | Study sprints and short meetings |
| 20:00 | 20 minute timer | Focused work between meetings |
| 30:00 | 30 minute timer | Deep work blocks |
| 45:00 | 45 minute timer | Long focus sessions |
| 1:00:00 | 1 hour timer | One hour sessions and classes |
| 1:30:00 | 90 minute timer | Classes, workshops and seminars |
| 2:00:00 | 2 hour timer | Events and long sessions |
| 3:00:00 | 3 hour timer | Half day sessions |
| 24:00:00 | 24 hour timer | Counting down to a deadline |
| 5:00 | 5 minute break timer | Short breaks between tasks |
| 10:00 | 10 minute break timer | Breaks between work blocks |
| 10:00 | 10 minute meditation timer | Meditation and breathing |
| 0:40 | 40-20 HIIT timer | HIIT circuit training |
| 0:30 | 30-30 Tabata timer | Tabata intervals |
| 0:05 | 5 seconds timer | Instant countdowns and reveals |
| 0:40 | Interval timer | Custom work and rest intervals |
| 20:00 | Presentation timer | Speaker and presentation pacing |
| 60:00 | Exam timer | Exams and tests |
| 365d | Event date timer | Counting down to any date |
| 1:00 | Quiz timer | Quizzes, tests and class rounds |
| 5:00 | Traffic Light timer | Classroom activities and lessons |
| 5:00 | Alarm timer | Everyday alarms and routines |
| 5:00 | Visual timer | Classroom activities and lessons |
| 1:00 | Race timer | Sports, races and training |
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