Jumping red lights

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summerdays

Cycling in the sun
Location
Bristol
I read somewhere that the effort required to stop/start requires more exertion overall than keeping going through lights.

I believe that you are right - however that start stop routine actually helps you to get faster I gather - can't remember what its called.

I only have one junction that I will go through a red light as it doesn't detect me (which means it is legal to go through the red as it deemed not to be working). However most times there are cars there as well. I have reported it and been told by the council that it does work for bikes so I keep meaning to go and test it out again in a quiet moment of the day.
 

pshore

Well-Known Member
There are some junctions in Cambridge where there is a lot of RLJ due to cyclists being disadvantaged because the road is designed for motor vehicles.

Some of these cases can be made safe and legal with some thought. Ideas here:
http://www.camcycle.org.uk/newsletters/97/article11.html
 

Tommi

Active Member
Location
London
I read somewhere that the effort required to stop/start requires more exertion overall than keeping going through lights.
Yes, if you ride (drive) fast, stop at the lights, and accelerate when light turns green it takes more energy than if you slow down earlier and avoid stopping completely before the light turns. So if you're rolling forward when it's time to accelerate again you save on fuel. They (used to?) teach economic driving back in the day, but I don't recall ever seeing it in practice in London. But it does directly undermine TfL's obsession for "stacking" so I guess it's understandable.
 

Tommi

Active Member
Location
London
Oh, just to clarify, when speaking of jumping the red light you all mean crossing the stop line 2 metres (or more) away from pedestrian crossing or crossing traffic lane? Rather than crossing the junction, or crossing pedestrian crossing but stopping before crossing traffic lanes, or entering pedestrian crossing. Why is the stop line so far away from where other traffic goes anyway?
 

SW19cam

Über Member
Location
London
Give us a few examples then.


The other day I filtered to an ASL, only to find there was no safe room at the front. Gliding carefully through the red light was the obvious, and safe, choice.

Other examples include when a car (or truck) is on your arse, or when you are intending to turn right on a busy road directly after a set of lights.

I'm not trying to encourage red light jumping, but there are instances when it is the safest.

Also, I was in Holland recently, where it is legal I do believe (most things in fact), and I regularly saw it done safely, creating space between cars and bikes. I think that is a good thing.
 

SW19cam

Über Member
Location
London
It's one of my pet hates. I'll pull cyclists over to have a go at them if they do it. This can back fire though as once it happened and I almost got run over whilst trying to chase after the offending cyclist.


Fair enough if they are doing it dangerously. Everyone hates dangerous *. But if a cyclist glides through a red on the top of a T-junction, where all entrances are visible, and it is completely safe to do it, you still pull them over?

*Insert any type of transport (cyclists, drivers, pedestrians, canoeists, runners....)
 

dellzeqq

pre-talced and mighty
Location
SW2
The other day I filtered to an ASL, only to find there was no safe room at the front. Gliding carefully through the red light was the obvious, and safe, choice.

Other examples include when a car (or truck) is on your arse, or when you are intending to turn right on a busy road directly after a set of lights.

I'm not trying to encourage red light jumping, but there are instances when it is the safest.

Also, I was in Holland recently, where it is legal I do believe (most things in fact), and I regularly saw it done safely, creating space between cars and bikes. I think that is a good thing.
the safer choice would have been not to go for the ASL
 
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