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General discussion => The Flame Pit => Topic started by: ConfusedDaze on March 22, 2026, 05:55:57 pm

Title: Re: New 4D Speed Cameras
Post by: andy_foster on March 22, 2026, 06:39:59 pm
Strange thing for TFL to be trialling but it is what it is I suppose.

Interesting point, which I must admit I overlooked due to being distracted by the issue discussed. Is this simply TfL being a strategic partner in the "Safety Camera Partnership" (which is never a partnership in law), or part of a land grab to increase its funding by increasing the scope of its war against motorists?
Title: Re: New 4D Speed Cameras
Post by: ConfusedDaze on March 22, 2026, 06:32:01 pm
Hi Andy,

Yes I did chuckle at the 4D naming

https://tfl.gov.uk/info-for/media/press-releases/2026/march/tfl-launches-trial-of-new-radar-based-speed-cameras

Apparently its due to the radar being 4D and doing elevation alongside distance, speed and angle - not sure I'd agree with either the 3D or 4D naming for radars that but there you go there's the 4th D!

Strange thing for TFL to be trialling but it is what it is I suppose.

Title: Re: New 4D Speed Cameras
Post by: andy_foster on March 22, 2026, 06:23:35 pm
4D is a somewhat creative use of language. Whilst a "dimension" in physics can be pretty much anything that can be measured, 3D refers to the 3 cartesian dimensions - length, with and height, or the x, y and z distances from a given origin, in perpendicular planes.

To say that the regular 3 dimensions are speed, distance and angle is somewhere between marketing twaddle and PMQs. Speed, distance and angle (or azimuth if you are a borderline f**ktard trying to sound impressive) are technically all dimensions, but calling them 3D is akin to selling potassium nitrate as "salt" in the condiment aisle.
The link, which appears to be mostly a lazily copied and pasted press release from everyone's favourite dartboard adornment, gives little relevant detail, and I would suggest that the chances of anyone here knowing much more (beyond than the rough flow of the approval process) are somewhat slimmer than I am.
Title: New 4D Speed Cameras
Post by: ConfusedDaze on March 22, 2026, 05:55:57 pm
Saw an article on the BBC a few days ago;

https://www.bbc.co.uk/news/articles/c6262ngvv8mo

How do these things work in both directions? Thought cameras were normally one way only? Anyone know more about them?

Also do they have to have any signage going in the other direction if there's no camera there anymore?

Any other news about them? Distance they work for, etc etc? (Presumably they won't work at all for motorcycles going towards them)

Thanks!