Vehicle insurance in the United States (also known as car insurance or auto insurance) is designed to cover the risk of financial liability or the loss of a motor vehicle that the owner may face if their vehicle is involved in a collision that results in property or physical damage. Most states require a motor vehicle owner to carry some minimum level of liability insurance. States that do not require the vehicle owner to carry car insurance include Virginia, where an uninsured motor vehicle fee may be paid to the state, New Hampshire, and Mississippi, which offers vehicle owners the option to post cash bonds (see below). The privileges and immunities clause of Article IV of the U.S. Constitution protects the rights of citizens in each respective state when traveling to another. A motor vehicle owner typically pays insurers a monthly or yearly fee, often called an insurance premium. The insurance premium a motor vehicle owner pays is usually determined by a variety of factors including the type of covered vehicle, marital status, credit score, whether the driver rents or owns a home, the age and gender of any covered drivers, their driving history, and the location where the vehicle is primarily driven and stored. Most insurance companies will increase insurance premium rates based on these factors and offer discounts less frequently.
Insurance companies provide a motor vehicle owner with an insurance card for the particular coverage term, which is to be kept in the vehicle in case of a traffic collision as proof of insurance. Recently, states have started passing laws that allow electronic versions of proof of insurance to be accepted by the authorities.