TINTED car windows can make your ride look cool, and they might even keep your car cooler.

But rules on their legality vary from state to state.

That's because the darker glass can make it more difficult to see into a vehicle.

This can pose certain security concerns, despite also being useful in some situations.

As a result, many states have different laws around window tinting.

Below, we explain what window tinting is and where it's legal.

Tinted car windows are treated, making the glass darker and keeping potentially damaging ultra-violet sun rays off of passengers.

They may also help with glare from other vehicles and could allow drivers to better see the road and conditions ahead.

The tint is usually a film placed on the interior of the car windows.

However, it is not a one-size-fits-all deal.

You can determine the percentage of tint applied to your windows, depending on the laws in your state.

For example, if 100% is the most light required to pass through and 0% is the darkest tint allowed, your state may only permit a 70% light tint.

Depending upon the specific window- meaning front sides, rear sides, rear window, or windshield- different percentages may apply.

In California, Delaware, and Iowa, for instance, your front side windows may legally be tinted 70% light, but your rear side windows and rear window may be any tint.

But in states like New Hampshire and New Jersey, tinted front side windows are illegal.

Some states, like New York, do offer medical exemptions to the tint rules and regulations.

If you fail to comply with the laws in your state, you could be subjected to a penalty or fine.

If you have questions about the legality of tinted car windows in your state, your best bet is to check with your department of motor vehicles (DMV).

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