salt is a common way to clear slippery roads. Salt lowers the temperature of the water which causes it to melt and it's one of the effective way of lower weather related collision. Using salt on road lower car accidents on highway up to 80%. However, salt used on roads causes rust on cars and environmental studies had showed that salt use for de-icing could affect water supplies, soil,and wildlife.
Negative effect of using road salt
The more salt that gets into contact with a vehicle the rustier it’s gets. Water from precipitation puts oxygen and carbon dioxide in contact with metal car parts. Free-floating ions in road salt come in contact with water. These ions helps the formation of iron oxide. Rust starts