Question About Traffic Lights

[Humphrizzle]

It's not a weight sensor, it's a magnetic sensor, this is why a motor scooter can trigger it but a cheerleading squad jumping up and down wouldn't. There are coils under the pavement (look next time, the sensor is shaped like this:

^
||
V

And when the metal body of the vehicle drives over the coil, the natural magnetism of the earth causes a slight current to flow through the coil, which is registered by the light. Creeping forward at a light sometimes CAN help to re-register a current if the light is failing to change when it normally should. There are definitely NO light sensors. Some have no sensors at all and are strictly timing based. Some light6s even have sensors several feet back, or even multiples of ten car lengths back to detect traffic buildups.

it's a kenetic energy sensor..

get a small electromagnet, attach to front bumper support or radiator support.. it will be like a 18 wheeler sitting there instead of your civic

[Brian*]

it's a kenetic energy sensor..

get a small electromagnet, attach to front bumper support or radiator support.. it will be like a 18 wheeler sitting there instead of your civic

Damn... i don't have a civic lol