Quote Originally Posted by Miles_on View Post
Question - how do these detectors work? Do they warn you a few kilometers in advance that a radar's being used in the vicinity, or only when you're being scanned by the radar already?

Off the bat thought- It's going to be hard to contest these radar gun tickets, unless you have a GPS enabled dashcam that logs your speed at the same time stamp of the radar reading. If advanced or late yung dashcam time or the timestamp of the radar recording (hindi tugma time nila), it will greatly complicate things.

Naku, baka gawing cash cow na naman ito like the ASBU of the LGU's some time back.


Radar detectors simply detect the radar signals from the radar speed guns. Assuming the radar gun is turned on, you can detect it starting between 500m to 1km away with most radar detectors. Most often, radar/laser speed guns are operated along straight lengths of road as radar/laser does not go around curves. For the same reason, its best for a speeding car to slow to legal speeds on top of hilly roads so your radar/laser detector can have time to sense of there is a speed-trap beyond the rise of the hill.

There have been cases like along coastal road where the vehicle was detected as "overspeeding" but actually driving at legal speeds. This was covered before in one of James Deakin's older articles. Even when properly documented of never exceeding the limit, the authorities still insisted their measurements were accurate and correct.