Highway code braking time advice ‘inaccurate’

Stopping distances in the Highway Code are woefully inaccurate because they underestimate drivers’ thinking time, road safety campaigners claimed.

A study commissioned by charity Brake estimated that it takes an average of 1.5 seconds to spot a hazard and apply the brakes, more than double the figure of 0.67 seconds used in the Department for Transport’s book.

The new study calculated that the stopping distance of a car travelling at 40 miles per hour is 51 metres, compared with the figure of 36 metres in the Highway Code.

This is the equivalent of an extra 3.75 car lengths and Brake urged the government to increase stopping distances in the book “as a matter of urgency”.

The charity’s spokesman, Jason Wakeford, said: “These figures suggest stopping distances taught to new drivers in the Highway Code fall woefully short.

“A true understanding of how long it takes to stop a car in an emergency is one of the most important lessons for new drivers.

“Understanding true average thinking time reminds all drivers how far their car will travel before they begin to brake – as well as highlighting how any distraction in the car which extends this time, like using a mobile phone, could prove fatal.”