Hi all, here is a post that may interest some. Written by Dr Marilyn Johnson, it is a discussion paper that goes with a research document about the reason bike riders run red lights.

So, what are your thoughts? do you run red? What are the conditions like here in Adelaide when it comes to lights changing.

Here is the link to the Conversation article.


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+1. And the 'rules are for other people' attitude.

>Cyclists run reds for much the same reason as motorists and pedestrians do. Impatience.

Ya know, I put that to the test a while back as it struck a chord. Well after a few days of waiting for traffic to clear at a particularly nasty intersection* at which it felt much safer for me to jump the lights than mingle with the traffic - due to a very large busy entrance onto an expressway a couple of hundred metres down the road - I thought my what a little angle I am, not upsetting those poor dears in their cars who may have been upset by my actions, when a large truck did an illegal u-turn and nearly ran me down - I would never have been in the position I was if I'd followed my natural instincts to do whatever it takes to protect my safety. Anyway I don't usually run red lights, but when the choices are bad, I'll take whichever option feels safest to me - it's not impatience, it's recognition that blindly following laws designed for motor vehicles may lead to my death at the "hands" of those self same motor vehicles.

*this was not in Adelaide and this route was my only choice, I couldn't ride on the expressway, I couldn't cross the river/harbour anywhere else, I guess my choice was don't commute by bicycle - great.

Not only do they run reds for convenience they also run it to avoid taking off with machines. I feel less inclined to run reds on Adelaides wide roads than i do on Sydneys tight streets. 

Either way people should be allowed to do things machines can't. 

Interesting ...

Table 3. Summary of reasons for why cyclists infringed at red lights (n = 769).

Reasons No. %
Turn left 246 32.0%
Inductive detector loop did not detect 186 24.2%
No traffic/pedestrians present 128 16.6%
Pedestrian crossing 82 10.7%
Other 127 16.5%

So 54% might be prevented by better infrastructure (loops detecting bikes) and enlightened road rules (cyclists permitted to turn left on red light to avoid being squeezed later by left turning vehicles).

It is tempting to cycle through the red light of the T-junction of King William Road and Victoria Drive. Follow the road rules and get squeezed at the next intersection or later the concrete protuberance to protect parked vehicles. Both poor road design when it comes to cyclist safety. A while ago ACC inspected the layout and agreed with my concerns, but still waiting for safety improvements.

I am a frequent user of a T junction that has lights. My steel frame bike always triggers the loop, my alloy frame bike only when I "weave" over the loop and a test at that intersection with a CF frame bike with CF wheels, failed to have any effect at all. I understand that the sensitivity of these inductive loops can be adjusted, but they do seem to rely on a certain metal mass to do the triggering.  

Ah yes, but all that extra weight !

LOL :)

+1. It is good to know that consideration is being given to bike-sensitive loops and turn left on red. These can actually add to safety and further reinforce our 'right to ride' as it were...

I have not noticed detectors in bike lanes. That goes against the typical design of bike lanes disappearing at intersections.  I have noticed the bike lanes to the left of the red bus lanes that make you merge across and into one lane as the bus and bike lanes are gone on the other side Main north road @ Ring route going South and Henley beach road at South rd going West.

Interesting article on removing traffic lights. 


Lets not forget traffic lights were originally designed for motor vehicles and have since been manipulated to prioritise motor vehicles on major roads. It very much disadvantages cyclists whose domain is traditionally on quieter back streets. 

quite often, anticipating the green - ie. jumping the red by a few seconds - is tempting simply to clear the line of traffic and reestablish presence on the road. also nice to get moving and clipped in without cars accelerating and passing alongside. i'm not advocating, just answering the post honestly.


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