If your son, daughter, wife, husband or any other policyholder on your cover makes a claim, or a claim is made against them, while they're driving their own car it won't affect any of the other policyholders' No Claims Bonus. However, if they have an accident in your car (which you are policyholder for) then your No Claims Bonus will be affected, but not for the other cars.
Yes, motor insurance is transferable to the purchaser of the automobile. All you have to do is inform in writing about the transfer to its insurance provider. The original owner of the car needs to fill out a new proposal form. A nominal fee is charged for the insurance transfer along with the recovery of No Claim Bonus from the transfer date till policy expires on a pro-rata basis.
The deductible is the amount of which the claim would be payable. Generally, a normal standard or compulsory deductible for most of the automobiles that range from Rupees 50 for the two-wheeler automobile to Rupees 500 for private four-wheelers and commercial automobiles that enhance according to the carrying capacity or cubic capacity of the automobile. Though, there could be cases where the insurance provider might enforce extra deductible which depends on the vehicle’s age or if the claims frequency is comparatively higher.
A compulsory car insurance scheme was first introduced in the United Kingdom with the Road Traffic Act 1930. This ensured that all vehicle owners and drivers had to be insured for their liability for injury or death to third parties whilst their vehicle was being used on a public road. Germany enacted similar legislation in 1939 called the "Act on the Implementation of Compulsory Insurance for Motor Vehicle Owners."