... a skateboard! It should be possible to modify this to double up as a braking indicator. Rishi

... ago in the USA where a large number of taxis were fitted with a brake light that blinked at a speed that indicated the proportional amount of braking, and it significantly reduced the amount of rear-front end collisions (one person’s rear end collision is another person’s front end collision). ...

Many thanks for your replies and sorry for my hurried spelling!! Ideas is my game not grammar. I think the braking light system or a proportional de-acceleration visual rear light would definitely work and if marketed at the right price and as long as it didin't prevent safe ...

... flash up in front of them. Wonder if this would work with a gradual braking indicator. I agree with Lukasz - it would be interesting to see some tests in a driving simulator.

Has this been done? Seems like a pretty obvious idea so I guess it has, but been thinking of this for years and never seen it yet. Seems like a real good usp for a SAAB or Volvo. A light which is off the shelf to buy, battery powered, retails for around £30 and without tampering with the cars machan...