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Car Forum / UK Car Forums / Driving (UK group) / May 2008GATSOs without rulers
The A505 in Herts has had its GATSO cameras repositioned recently in the Royston/Baldock area. But not all the new camera positions have rulers on the carriageway. In fact the camera (now removed) that was previously at the eastern end of the Baldock bypass never had a ruler at all during its time there. I presume the 'type approval' or whatever it is called for GATSOs means that a speed camera without a ruler must be a dummy box, correct? FTAOD, no, I am not nervously awaiting a NIP. >The A505 in Herts has had its GATSO cameras repositioned recently in >the Royston/Baldock area. But not all the new camera positions have [quoted text clipped - 5 lines] >means that a speed camera without a ruler must be a dummy box, >correct? Or a speed camera waiting for the lines to be painted. >> The A505 in Herts has had its GATSO cameras repositioned recently in >> the Royston/Baldock area. But not all the new camera positions have [quoted text clipped - 7 lines] > > Or a speed camera waiting for the lines to be painted. Certainly around here, some cameras have waited a long time for the painting crew to arrive after resurfacing. >>> The A505 in Herts has had its GATSO cameras repositioned recently in >>> the Royston/Baldock area. But not all the new camera positions have [quoted text clipped - 10 lines] >Certainly around here, some cameras have waited a long time for the >painting crew to arrive after resurfacing. It would be over 2 years for the (now moved) Baldock by-pass camera - the road opened in March 2006. It was surely a dummy, therefore. >>> The A505 in Herts has had its GATSO cameras repositioned recently in >>> the Royston/Baldock area. But not all the new camera positions have [quoted text clipped - 10 lines] >Certainly around here, some cameras have waited a long time for the >painting crew to arrive after resurfacing. There's one on the A4 eastbound approach to Hammersmith that's been there for at least 3 months and still no lines. >>>> The A505 in Herts has had its GATSO cameras repositioned recently in >>>> the Royston/Baldock area. But not all the new camera positions have [quoted text clipped - 13 lines] >There's one on the A4 eastbound approach to Hammersmith that's been >there for at least 3 months and still no lines. IIRC a graticule can be superimposed on the photo optically. DG >>>>> The A505 in Herts has had its GATSO cameras repositioned recently in >>>>> the Royston/Baldock area. But not all the new camera positions have [quoted text clipped - 15 lines] > >IIRC a graticule can be superimposed on the photo optically. Interesting. Is that legal? > >> The A505 in Herts has had its GATSO cameras repositioned recently in > >> the Royston/Baldock area. But not all the new camera positions have [quoted text clipped - 10 lines] > Certainly around here, some cameras have waited a long time for the > painting crew to arrive after resurfacing. Some "GATSOs" without lines could be Truvelos >> >> The A505 in Herts has had its GATSO cameras repositioned recently in >> >> the Royston/Baldock area. But not all the new camera positions have [quoted text clipped - 12 lines] > >Some "GATSOs" without lines could be Truvelos The cameras on that section of the A505 are all rear-facing GATSOs. > I presume the 'type approval' or whatever it is called for GATSOs > means that a speed camera without a ruler must be a dummy box, > correct? No, incorrect. It's acceptable to install a Gatso without road markings. At the time of installation a reference photograph is taken using temporary markings. Any subsequent determination of speed can then be done using an overlay of the reference photograph onto the evidential photograph. Since the cameras are fixed and have a fixed focal length lens, there's no problem with scale or parallax using this technique. Another possibility is that the camera is using loop detectors, not microwave. These seem to be becoming more common and because the loop positions are fixed, there's no need for road markings. Similarly Truvelo and SPECS don't need road markings. |
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