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SpeedCurb speed cameras explained

The SpeedCurb fixed speed camera is often used to monitor traffic light offences as well as speeding offences, though it is most commonly used to monitor and record speeding motorists. Whilst most SpeedCurb sites across the UK are single camera installations - monitoring just a single lane or direction of traffic, it's also possible to mount twin head SpeedCurbs on a single mount. These twin head installations when placed for example in the centre of a dual carriageway or motorway can monitor up to four lanes of traffic (two in either direction) simultaneously!

Like the Gatso camera, SpeedCurb is rear facing, capturing photos of the rear of a vehicle. But unlike Gatsos which use radar to trigger the camera, SpeedCurb uses sensors embedded into the roads surface. Other speed cameras that use sensors buried into the roads surface include the Truvelo and DS2 camera system.

How does SpeedCurb work?

SpeedCurb cameras use three piezo sensors embedded into the road which are spaced out by 1 metre. When a vehicle drives over the sensors the time between each sensor is timed, e.g. sensors 1 to 2, 2 to 3 and 1 to 3. If the time taken is faster than the set speed limit or threshold e.g. 33mph in a 30mph zone the SpeedCurb camera automatically takes photos and the speeding violation is recorded.

When a motorist drives too fast past a SpeedCurb and triggering its camera a total of three digital photos are taken. The first two which are wide-angle photos depict the vehicle (make and model) and surrounding area, while the third is a close up of the vehicles number plate.

Extra checks

In addition to the piezo sensors triggering the SpeedCurb and to provide further evidence of the speeding offence and to comply with UK law. An extra method of confirming the vehicles speed is also recorded at the time. This is achived by the use of check marks placed along the road surface. By using the first two photos captured by the SpeedCurb a speed camera be calculated after the event.

No film

Unlike other camera systems, SpeedCurb cameras don't use film. Instead all incriminating photos are recorded digitally and then transmitted to a central offiice. Once received the data is then recorded and stored on DVD, ready for an officer to view the offences and to decide whether to proceed with a prosecution.

Points and Penalties

The absolute minimum penalty for being caught speeding on the UK's roads increased 66.7% in July 2013 from £60 to £100 fine. A minimum of 3 penalty points will also be added to your licence.

However, depending on the road speed limit and your actual recorded speed in the speeding offence a court summons may be generated in place of the Notice of Intended Prosecution (NIP) through the post. For more information click here.

A motorist caught by a SpeedCurb camera writes:

I have been prosecuted for speeding at 36mph on the A358 at Henlade by a SpeedCurb camera. However the photographic evidence provided by the police indicated that my speed was less than 34mph over the white lines. As this is below the declared prosecution threshold of 35mph in a 30mph restricted zone, I pleaded not guilty at last week's pre-trial referral hearing.

However at this hearing I was astonished to be told that the photographic evidence was inadmissible, and that full reliance would be placed on the 'infallible' underground piezo cell part of the system, on which the 36mph figure was based. 

I had already submitted questions relating to the operation of the speed camera system, but was told that answers to these questions would be withheld until the trial.  Only then would I have the opportunity to put my questions to an 'expert witness', and if found guilty, I would have to pay the cost of 'perhaps up to £20,000' for the expert witness's testimony.

I simply cannot take the risk of paying such a price for asking for information which I had assumed should have been made available before the trial.

Despite my serious misgivings, it is clear that I have no alternative but to plead guilty. So much for British justice - it is what makes me want to emigrate!

SpeedCurb locations

What's your view and experiences with Speed Curb speed cameras? Tell us here.

Want to know where the UK's SpeedCurb speed camera are as you drive? Here at SpeedCamerasUK.com we have a UK database of speed camera locations. This database also includes Gatso, Truvelo, Truvelo D-Cam, Peek, SPECS and Traffic Light speed cameras and more. To read more about the speed camera types click here.

SpeedCurb Speed Camera Questions and Answers

Question: How far over the 30mph do you have to be to trigger a SpeedCurb camera? Are there any rules to the minimum speed before prosecution, I believe some but not all police forces don't prosecute at a low excess speed e.g. 32mph/33mph.

Answer: Yes, you are right, the exact speed threshold can vary from Police force to Police force. The answer to your question will only be known by the camera installer and the local Police authority.

Question: I have a question regarding "Speedcurb" speed cameras. If on a two lane dual carriageway can the camera tell which lane the speeding offence occurred? As I was passing a camera while another car speed passed triggering the camera.

Answer: Yes, painted white lines on the roads surface confirm not only which vehicle was speeding, but also confirm the speed of the speeding vehicle too. This is used as a secondary measure to the information recorded by the SpeedCurb speed camera. Proving beyond reasonable doubt which vehicle was speeding and the vehicles speed.

Question: I was travelling to work this morning at 1:30am and was flashed by a speedcurb camera mounted on th opposite side of the road (I was travelling into the cameras direction) I was doing under 60mph and my front wheels hadn't hit the white lines yet whilst no other vehicle was coming in the right direction towards me. Am I likely to recieve a NIP? And if so is there anything I can do about it?

Answer: We are unable to comment, you will need to wait and see if a NIP is issued and sent through the post.

Question: I was driving a route I use only sometimes and where their used to be just a normal red light speed camera it has now been replaced by a speed curb camera. However, there are no white lines on the road so my question is if their are no lines on the road can I still get a ticket for possibly going over the limit? As I've seen other ones with lines and I know they monitor both speed and red light.

Answer: Whilst I we can't comment on an individual speed camera location. It sounds to us like they've not yet fully installed the SpeedCurb camera. The SpeedCurb camera uses lines in the road as a secondary measure to record and measure the vehicles speed.

Question: A new SpeedCurb speed camera has been installed on the A616 AughtonRroad just past the school. I read on the internet conflicting views about it covering both sides of the road. The camera is positioned on the opposite side of the road to where I was travelling. It is sited in the normal position for speed cameras. The South Yorkshire safety cameras website states it is a rear facing camera. However, like all websites, this may have not been updated since the new camera was installed. Can the speedcurb camera cover both sides of the road if its not sited on a central reservation?

Answer: SpeedCurb cameras only cover one direction of travel only… unless they are double headed or twin cameras, some of these do exist.

Also, some fixed speed cameras are positioned in the centre of the road/carriageway and periodically turned, but will ONLY target one carriageway/direction of travel at any one time.

Please send a photo and I will confirm which traffic is targeted by the new SpeedCurb camera.

Speed camera alerts as you drive

Did you know you can be alerted to where SpeedCurb and other speed cameras are along UK roads via in car devices? These systems include dedicated speed camera detectors, sat navs with speed camera locations and various apps for smartphones. To read more view our buyers guide which talks you through the various features and different technology the different systems use. We also have dedicated reviews for each product with user comments.

We also sell a range of speed camera detectors which you can browse via our online shop. We only stock systems that we consider will give you the best, most accurate, reliable and frequently updated speed camera databases. So whether you are a motorist, truck driver or caravanist you can rest assured you have the best speed camera warning system.

Click here to visit our online detector shop.

Last updated: 17th October 2018