Car trivia that many people don't know
1. Why turn signal has "da da" sound?
Turn signal light is bright and off, is through the circuit of the flasher and relay to realize, the structure of the relay is a solenoid and a switch, in its work suction will be issued at the moment of da a hit, turn signal repeated "da da" sound, is the flash relay work issued. Nowadays, many functions of the car need the corresponding control unit Direct execution, the car does not use the flash relay, now hear the sound is basically simulated, with this sound allows drivers to know clearly whether the turn signal is open, can improve driving safety.
2.Why Suv has rear wiper and sedan doesn't?
Cars have front windshield wipers, what about rear windshield wipers? Careful people will find that in the SUV, two cars or wagons have rear wiper, but not on the sedan.
This is mainly related to the shape of the car, the sedan drive forward, the route of the airflow is the front windshield - roof a rear window glass, so the rear window glass is not easy to collect dust and water: while the airflow route of the SUV is the front windshield - roof, dust is easy to adsorption in the rear window glass, resulting in the rear of the visual obstacles, so these two-box models have a rear windshield wiper, for example, the Enclave's three-box version and two-box version.
