Truvelo

About Truvelo

Truvelo is generally used to refer to a speed camera manufactured by the South African company Truvelo Manufacturers (Pty) Ltd, the actual name of which is the Truvelo Combi.

The Truvelo camera is usually a front-facing camera (it can also be rear facing) taking pictures using a flash gun fitted with a magenta filter (the driver is less likely to be dazzled by the flash light). The reflected light provides the film with the correct exposure resulting in a clear picture of the driver committing the offence (considered as incriminating evidence).

Piezo-electric road strips, a known distance apart (1.53CM from 1 - 3, 2 - 4) are set into the road in front of the camera, and the time between compressions is measured using an impededence converter and two clocks in the camera to give the resulting speed of the vehicle. The system takes a single photograph (front facing only, two for rear photography) and uses the time from the clocks to calculate the resulting speed. The photograph of the offending vehicle will show its front tyres on the three narrowly spaced white lines across the carriageway (known as a Secondary Speed Check Lines), the middle line is 1.8M from the last sensor, the first and third are 18CM either side of the middle line = 10% which are present at all Truvelo installations. This is to identify the offending vehicle when it is travelling alongside a non-offending one.