Blind-spot mirrors will soon have to be fitted to all heavy goods vehicles in the UK.
Following a campaign by Cycling Plus magazine, the British Government has agreed to implement new EU legislation on the issue.
The move comes in the wake of official Department for Transport figures which suggested it would save the lives of an estimated 18 cyclists a year.
From 31 March, all vehicles covered by directive 2007/38/EC – basically, all goods vehicles capable of carrying more than 3.5 tonnes – have to be fitted with wide-angle and close proximity (blind-spot) mirrors.
From 1 April, lorries will have to undergo annual tests to make sure their mirrors comply with the new law.