Test your Reaction time!

This is a quick and easy reaction tester - how do you measure up?

This test will determine how quickly you respond to visual stimuli when you are prepared for it... Remember that when you are driving you might be taken by surprise!

Play with the test to find out if you respond differently to different colours (select the colours from the drop down box).

Click "Start," wait until the page background colour changes and then hit "stop". This is not a scientific test - just a bit of fun!

In the car you never know when things will happen - to simulate this, the waiting time on this test varies - it might be almost instant, or possibly half a minute ... Just be ready!