A316 Chiswick to M3 safe zone cameras installed

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Just noticed that the installation of these has begun and the removal of the old Gatsos on Twickenham bridge / Old deer park have been removed.
Cameras are tiny and the whole route from Hogarth roundabout to the start of the M3 will become one big average speed zone.

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Funnily enough I tweeted that question to TfL today and I'll update once I get some feedback

some googling threw up various press releases from TfL and Siemens which said go live in summer 2016. I'm hoping that they'll wait until all are installed but they could i suppose start now..i'm not sure the signage legality ( do they need to mention average speed zone or would the existing speed camera signs suffice?)

Further googling showed a lot of anger about the A40 Westway rollout and the fact TfL didn't do much to publicise it, apparently it is now bringing in over £100k a month in fines its making me quite cynical. Also the 316 does not seem to have a high accident rate.. i'm more given to think that TfL have measured the traffic flow and speed and seen a potential revenue opportunity.

Given that it is meant to extend from the start of the M3 to the Hogarth roundabout in Chiswick it's going to make the journey hellish. I also noticed today just how close some of the cameras are today , especially if these are paired.

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Blaster72 said:

Thanks for mentioning this, I live near Sunbury Cross and use this route into London all the time. Didn't have a clue this was happening.

I did notice the Gatso cameras had gone but didn't know why.

I'm not sure they'll make much money out of them though, the route is very congested and I only really see excessive speeding at night when its quiet. I do agree there are lots of accidents though but I'm not so sure speed is the main reason.

I agree that during peak periods it can be quite congested (especially around the Hospital bridge roundabout ). Off peak traffic flows a lot freer , especially around the M3 end.

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The only feedback I've got from TfL is 'early summer' which mirrors their press release (s)

I've noticed cameras going up at the extremities now towards the M3 end and also after Chiswick Bridge before the Hogarth

I've also found a lot more people are sticking to the speed limit too (me included)

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Good old TfL

The Southbound sign says from the 13th the Northbound at the end of the M3 says cameras are active

Signage along the A316 is virtually non existent, there are signs for ANPR in use from the Met as well as LEZ camera signs but I've only seen two average speed camera signs along the entire length.

How many people drive the entire length? If I join at the Hospital Bridge roundabout there are no signs saying I'm entering an average speed zone nor are there any in front of the cameras. I would expect as a minimum signs on all major roads entering the A316 as well as before the cameras.

The fact there are none only reinforces the impression the primary purpose of the cameras is revenue raising- if that was not the case why not publicise more so that they can act as a deterrent?

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Blaster72 said:

I've seen loads of people driving past me in the 50 sections at around 60 to 70mph in the last couple of days. The section after Sunbury Cross heading into town is going to make them a fortune ££££

The average speed signs are there but I just think many don't realise quite what has been installed.

Saw the same thing last night

Some guy in a silver e class must have been doing 70 in lane three at about 1030pm. The sign is on the truck lay by so he probably didn't see it.

The rest of the route seems to be adhering to the limit (simply because if you even wanted to go faster you can't as everyone is pretty much doing 40)

I can see the majority of the infringements coming later at night when there is less traffic and on the hospital bridge to M25 section (both ways)