More pedestrian crossings will get "how-long-have-I-got?" countdown signs as part of a new safety action plan for London's roads.

The pedestrian countdowns will be extended to include around 10 per cent of the capital's crossings, Transport for London (TfL) said.

The countdown timers have been installed in Balham and Wimbledon town centres when diagonal crossings were built since 2010.

The plan also includes trials of innovative collision detection software on London buses this summer.

The trials will build on research previously carried out by TfL on detection equipment and will look to test the effectiveness of radar and optical technology for reducing collisions with cyclists and pedestrians.

There could also be trials on the use of intelligent speed adaptation technology on buses to promote adherence to speed limits.

TfL has also launched an updated "digital speed limit' map to provide drivers with the best information on the speed limit of the roads they are travelling on TfL and London Mayor Boris Johnson are aiming to reduce by 40% the number of people killed or seriously injured on the capital's roads by 2020.

Mr Johnson said the plan, involving 31 key actions, "enshrines the raft of actions that are being taken to improve pedestrian safety in the capital".

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