Collision Damage Waiver it is a damage insurance coverage that is available and usually included in the rental rate. The Collision Damage Waiver most likely has an excess amount, which you will be responsible for. The security deposit will be blocked at your credit card on arrival at the local office. The deposit is an amount for which you can be held liable in case of damage/theft of the vehicle. It means that the particulate amount of money can be taken from the blocked if you cause any damage to the car during the car rental period. Damage to or loss of tires, windscreens, glass, and undercarriage may not be covered by the Collision Damage Waiver. When the car is returned in the same conditions as it was picked up from the office your security will be unblocked. Search car rental on https://www.omancar.net/muscat-car-rental.htm