M25 - When do the cameras actually flash?

Andrew_Ryan_89

Hey guys, driving on the M25 I'll cross the speed cameras at 80mph.

Others I see going at least 90mph.

As the speed limit is 70, when does the camera actually flash?

Iceweasel

Speed camera don't need to flash these days. That's old technology.

knightstyle

We saw some flashing a couple of weeks ago, near M40 on the anti clockwise side.

Iceweasel

knightstyle wrote: »

We saw some flashing a couple of weeks ago, near M40 on the anti clockwise side.

That's quite possible - some still do.

MX5huggy

My understanding is they are only used when the variable speed limit is enforced. There was a bit in the news about this changing on another road.

AdrianC

MX5huggy wrote: »

My understanding is they are only used when the variable speed limit is enforced.

AIUI, they are still in use when the variable limit isn't reduced, just at a much higher margin (possibly into three figures).

There's really only one easy way to find out - increase your speed gradually until you do get a ticket, then reduce it a bit. And hope they don't change the threshold. Let us know how it goes.

Strider590

They could use an infrared flash, as this won't dazzle oncoming drivers.

bigjl

Iceweasel wrote: »

Speed camera don't need to flash these days. That's old technology.

The new ones they fitted last year to the posts on the edge of the road still flash. There aren't that many of them though. O

I don't think the one mounted in the gantry above the roadway flash.

bigjl

MX5huggy wrote: »

My understanding is they are only used when the variable speed limit is enforced. There was a bit in the news about this changing on another road.

As Inposted above there are extra cameras on posts beside the road aswell as the older ones above the roadway.

Apparently they made the ones in the average speed limit zone active all the time some time last year.

If you have Waze all the cameras on the M25 are marked.

Currently driving a 1.4i Berlingo and a Picanto 1.0 so unintentional speeding is not a huge issue for me at the moment.

Car_54

Strider590 wrote: »

They could use an infrared flash, as this won't dazzle oncoming drivers.

AFAIK no current cameras use infrared. Some facing cameras use a conventional flash with a magenta filter, which is =mistaken for infrared.

flicks

Car54, there are new speed cameras going up all over Norwich with the brand name Truvelo.


They have a separate post next to the camera with an infrared flash.


The idea being that as they take a picture of the cars going towards them,( in order to also capture the drivers' faces), the flash does not go off in their eyes.


Amazing how considerate they are these days!