See also:

Vacuum assisted brakes
The brake booster aids braking by using engine vacuum. If the engine stops, you can stop the vehicle by depressing the brake pedal. However, greater foot pressure on the brake pedal will be re ...

Most common factors contributing to vehicle corrosion
-The accumulation of moisture-retaining dirt and debris in body panel sections, cavities, and other areas. - Damage to paint and other protective coatings caused by gravel and stone chips or ...

Relative humidity
Corrosion will be accelerated in areas of high relative humidity, especially those areas where the temperatures stay above freezing where atmospheric pollution exists, or where road salt is us ...