In several countries insurance companies offer direct repair programs (DRP) so that their customers have easy access to a recommended car body repair shop. Some also offer one-stop shopping where a damaged car can get dropped off and an adjuster handles the claim, the car is fixed and often a replacement rental car is provided. When repairing the vehicle the car body repair shop is obliged to follow the instructions regarding the choice of original equipment manufacturer (OEM), original equipment supplier parts (OES), Matching Quality spare parts (MQ) and generic replacement parts. Both DRPs and non OEM parts help to keep costs down and keep insurance prices competitive. AIRC (International Car body repair Association) General Secretary Karel Bukholczer made clear that DRP's have had big impact on car body repair shops.
Providers can also offer sub-divisions of auto repair insurance. There is standard repair insurance which covers the wear and tear of vehicles, and naturally occurring breakdowns. Some companies will only offer mechanical breakdown insurance, which only covers repairs necessary when breakable parts need to be fixed or replaced. These parts include transmissions, oil pumps, pistons, timing gears, flywheels, valves, axles and joints. 
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.
CTP insurance is compulsory in every state in Australia and is paid as part of vehicle registration. It covers the vehicle owner and any person who drives the vehicle against claims for liability for death or injury to people caused by the fault of the vehicle owner or driver. CTP may include any kind of physical harm, bodily injuries and may cover the cost of all reasonable medical treatment for injuries received in the accident, loss of wages, cost of care services and, in some cases, compensation for pain and suffering. Each state in Australia has a different scheme.