As per the Motor Vehicles Act, 1988, 'Third Party Insurance' is a statutory requirement. The idea of the third party comes from the fact that the prime beneficiary of the policy is neither the original insured nor the insurance company, but a pretentious third party. As per the rules, the Insurance Regulatory and Development Authority (IRDA) of India compute the damages.
The Insurance Information Institute suggests that you take the amount you'd pay in one year for comprehensive and collision coverage, and multiply that number by 10. Is your car worth less than that number? Then comprehensive and collision coverage might not be a cost-effective option for you. In other words, you might want to talk to your agent about whether it makes sense to include these coverages on your car insurance policy.