It is commen knowledge that one millimeter movement here at the camera or lazer trapping device cuases a big differance at 100 m, for instance. And I am wondering about the fact that they trap at very big angles from behind, iow, they are sitting on the pavement , next to a house behind a tree, which has a service lane and another pavement between the road in which we drive (two lanes).Another cenario is that the officer is sitting on an off ramp, which is the up ramp of a bridge going over the road to which he is trapping(he sits very high, and the road he trapping on is a turn, and he traps on the bend of the turn, i hope you understand what i am trying to describe?) surely this must also be a factor that influnces the accuracy of the mesurements at an angle ?
i still think the angle of trapping gives even more suspect readings, how long does a laser or radar take to determine speed betwen to points? ad the bad angle and no movement of the camera to follow the specific car , then this all adds up to "ERROR"
The speed of the of the laser is 300.000 km per second, so you can work it out for your self it is very quick. The angle will play a part, but very minor
1. What is the maximum perpendicular setup distance or the positioning of the S.M.E. from the centre line of the road/drivelanes? 2. What is the maximum vertical setup height for the S.M.E. above the road surface? 3. Can the S.M.E be calibrated in town and then be setup at a later stage on the open road without any re-calibration of the S.M.E? 4. May the same S.M.E. be used for oncoming traffic and for traffic going away from the device in the opposite direction?