A lot of car owners in India are stuck in a dilemma. On one side, there’s unbearable heat that makes driving uncomfortable. On the other, there’s the fear of getting fined for using a car window tint. So the obvious question becomes—can you use a sun control film for car without getting into legal trouble?

The answer is yes. But only if you understand where most people go wrong.

If there’s one rule that decides whether your sun control film for car is legal or not in India, it’s the 70% VLT rule. And yet, this is also the most misunderstood part of window tinting. Most car owners hear the number but don’t fully understand what it actually means in real-world driving conditions.

VLT, or Visible Light Transmission, is simply the percentage of visible light that passes through your car’s glass. The higher the number, the clearer the glass appears.

Getting stopped and fined for car window tint is frustrating—but more importantly, it leaves most people confused about what to do next. Some remove the film completely and go back to driving in extreme heat, while others reinstall the same type of window tint film and end up getting fined again.

The issue isn’t the idea of using a sun control film for car—it’s using the wrong type.