The dangers faced daily by
But away from the furore a number of British technology firms have been racing to perfect safety systems that it is hoped can save lives. Cycling deaths hit a five-year high in 2012, with 122 cyclists killed on British roads, and safety standards in the capital came under particular scrutiny.
The trials, which began in the summer, are attracting renewed interest after outrage over last month's deaths. Three of the victims were killed by lorries, two by buses and another by a coach. In at least one case a cyclist turning left was struck down by a lorry going the same way.
The new technologies aim to correct this deadly blind spot, a major contributor to the deaths and life-threatening injuries among the capital's cyclists. Trucks are involved in more than half of cycling deaths in
Its marketing director,
Another company, Safety Shield Systems, has opted for software connected to sensors and video cameras - the technology first developed by Israeli company Mobileye that can be used in self-driving cars. The firm tested radars but found too many faults, said founder
His Safety Shield issues two warnings: "If you are getting too close to a pedestrian or a driver, it just flashes. If it is looking like you are going to collide, it gives you a harsh beep and three seconds to brake."
Road safety campaigners have reserved judgment until the trials are complete. "If they are as good as claimed, the driver would have had a warning, but whether that warning would have come in time is hard to say," said
Lloyd is far less convinced by the third system being tested: an
TfL declined to say when it would reach a decision on the trials, but further innovations - including low-level signals and "Dutch-style roundabouts" that slow traffic and sometimes keep cyclists in separate lanes - would be tested next year.
Cyclists hold a 'die-in' protest in Vauxhall,
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