The law states that the front and rear windows of a vehicle should allow 75% light to pass through which means a tint of 25%is allowed. Also the side windows should allow of 50% light to pass through which means a tint of 50%. Any tint that does not comply with the regulations will be hence liable for fine. Here the law was created not to see into one's car and invade privacy,but to ensure that a vehicle following behind a vehicle can see what's happening in front of the vehicle in front. Also for seeing what's happening at a junction across the vehicle in case its from a side.
Examples:-
Scenario 1-You are driving your car and about to overtake the vehicle in front of you,the vehicle in front has very dark tint on its rear window. A person is crossing the road in front of the car in front of you. You not only wont see the pedestrian crossing as the view is blocked by the tints on the vehicle in front but also wont be able to stop in time to save the pedestrian. You will be looking at a chance of 90% hitting the guy. The sole reason that you failed to see the pedestrian crossing was the dark tint on the other vehicle's rear window. I also might add that the pedestrian also has to look for vehicles before crossing,but that is commonsense and not the law. The law is that a pedestrian has right of way. So to conclude you will be looking at a Claim petition against you which occured out of somebody else's fault. And to make to make it ironic,the person in the other vehicle will probably go scott free as he had not hit the person.
Scenario 2- You are driving your car with dark tints and another car is following you,you have to stop suddenly as someone jumps in front of your car,the following car's driver does not see this happen as what happens in front of your car is not seen by him due to the dark tints. He rams into your car,you and he get injured. Here you can get a claim petition to work in your favour as the insurance company's counsel have no idea that the accident was contributed by your dar tints,but you will be injured anyways. And I dont think any amount of money can account for pain and suffering,period.So I would humbly request you all to not fix your cars with dark tints. And by the way,The tints I am using on my car is Garware Classic Light Green shade(It cost me Rs.1400/- for my Alto) and it is within the legally allowed tint levels. I carry stick on window blinds in case my wife and baby is there and the baby needs to be nursed. And we do that by parking the car safely off the road and fixing the blinds on the window for privacy,thereby ensuring we dont hamper the convenience of other road users.
Laws are not meant to offend or distress anyone,its for your own and other's safety. Please comply with the rules and regulations of the road.