South korean automakers hyundai and kia use window glass with an spf between 44 and 48 in those vehicles they assemble in the u s.
Uv laminated car windows.
However uva transmission depends on the type of glass.
To see whether car windows are protective boxer wachler took a uv a light meter to a number of los angeles car dealers on a cloudless may day in 2014.
Don t count on this degree of protection to safeguard you against uv altogether when you occupy a vehicle.
The side window of your car is made out of a different type of glass tempered glass.
Uv radiation levels are generally much lower inside the vehicle than outside in full sunlight.
Laminated glass used for windscreens and tempered glass usually used for side and rear windows both block uvb radiation.
And toyota switched to laminated glass for the front windows of.
Some automakers like hyundai and kia are already using higher spf glass not only because it protects against uv rays but also because it helps cool down the car and thus improves fuel efficiency.
Side and rear windows which usually have only a single layer of tempered glass may only block about 65 percent of incoming uv rays.
This exposure may prove especially damaging to long distance drivers.