Cyclist-only traffic lights switched on at Bow Roundabout (+ video)

New lights give cyclists four-second head start over other traffic, and TfL also introduces bigger ASL zone

by Simon_MacMichael   June 2, 2012  

Bow cyclists only lights

New cyclist-only traffic lights were switched on yesterday at Bow Roundabout, the interchange in East London where two cyclists lost their lives last autumn. The traffic lights give cyclists a head start of four seconds over other traffic and have been introduced specifically to minimise the risk of riders being killed or injured by lorries, particularly those turning left.

The cyclists killed at Bow last year, 58-year-old Brian Dorling and Svitlana Tereschenko, aged 34, were both struck by lorries, their deaths, and other fatalities in the city, leading to pressure being put on Mayor of London Boris Johnson and Transport for London (TfL) to redesign junctions throughout the capital to help ensure the safety of bike riders.

In the wake of the two deaths at Bow it was revealed that TfL had ignored recommendations in a report it had commissioned from independent consultants about making the junction safer before the installation there of one of the Barclays Cycling Superhighways, with similar calls also being made by the London Cycling Campaign (LCC).

Besides the cyclist-only traffic light phase, which TfL claims is the first of its kind in the UK, the new road layout at Bow roundabout also includes a 12-metre long advanced stop line (ASL) zone, while there is also a raised kerb between main carriageway and the blue-painted lane of the Barclays Cycle Superhighway as it approaches the junction.

There was little fanfare ahead of the lights being switched on – there’s no press release on the TfL website, for example – and it’s unclear whether the body is still pressing ahead with other potential improvements previously announced at the junction such as cycle lanes on the flyover. In March, however, TfL did release a video of a CGI simulation of the traffic lights in operation.

Speaking to The Times, which launched its Cities fit for Cycling campaign earlier this year after one of its reporters, Mary Bowers, suffered serious injuries and was left in a come after she was hit by a lorry while riding to work, TfL’s head of capital development, Nigel Hardy, revealed yesterday that early signs were that the new layout at the junction was working.

“The junction has been completed in terms of traffic layout and the lights have been switched on,” he said. “This is the first of its kind in the UK. We’ve been making a few tweaks to the phasing during the day, but it has worked well with the morning traffic today.”

Engineers will be assessing the junction over the next week to see whether any tweaks may be needed – one already identified is to shorten the length of the kerbed section to prevent large vehicles from clipping it.

According to The Times, the new traffic light system enabled cyclists to get through the junction safely, although it added that some did appear to find the new layout confusing – an issue that could perhaps be addressed by traffic engineers through clearer signage.

According to Mr Hardy, other junctions in in the capital could also see cylist-only traffic light phases introduced, with The Times saying that Blackfriars Bridge could be one location to benefit.

Commenting on the Bow scheme, Mr Hardy said: “If drivers comply with the new layout and cyclists comply with the red lights, then we have eliminated the left-turn conflict at Bow Roundabout.”

Some might see that as a bold statement to make, given that risk cannot be completely designed out of any situation involving moving traffic, and there are circumstances where the head-start traffic light phase might actually increase the risk.

A rider hurrying up the left-hand lane towards the lights on the cyclist only phase, for example, could be put in danger as the other traffic lights change; all it takes is one lorry driver who assumes, wrongly, that any cyclists have already ridden off.

The new lights were, however, welcomed by Mr Dorling’s widow, Debbie, who told The Times: “The TfL guys did talk me through it and it does sound good. Anything to make it safer and to stop the conflict between motor traffic and bicycles and stop lorries turning left into cyclists has got to be good.”

7 user comments

Oldest firstNewest firstBest rated

If you look at 0.34 in the video, the road planners have a very skewered perception of how cyclists ride. It would appear they think cyclists act like mice and hug the skirting board rather than take a primary position.

zanf's picture

posted by zanf [532 posts]
2nd June 2012 - 9:49

3 Likes

How long before the drivers twig and go when the cyclists' light is green rather than waiting for their own?

posted by JohnS [198 posts]
2nd June 2012 - 9:53

3 Likes

I hope there are also enforcement cameras to ensure that motor vehicles do not simply ignore the ASL - as they do in most of central london.Help too if police understand law and are able to issue tickets.

robbiec

robbieC's picture

posted by robbieC [62 posts]
2nd June 2012 - 11:14

6 Likes

To make it more realistic, all the cars should be parked in the ASL box plus a couple of lorries. Wink

posted by londonplayer [671 posts]
2nd June 2012 - 12:10

5 Likes

wonderful! this is more like it ..

posted by Karbon Kev [677 posts]
2nd June 2012 - 13:41

4 Likes

"Engineers will be assessing the junction over the next week to see whether any tweaks may be needed – one already identified is to shorten the length of the kerbed section to prevent large vehicles from clipping it."

Eh? Doesn't that rather negate the whole point? If large vehicles are clipping the kerb isn't that telling you that they are too close to the cycle lane, and that the kerb is necessary, indeed should be higher?

posted by Paul M [311 posts]
4th June 2012 - 16:43

5 Likes

4 seconds is nowhere near long enough, if you're going to do this TFL, do it properly, at least 8 seconds if not 10.

posted by northstar [1106 posts]
6th June 2012 - 8:27

4 Likes