Basic auto insurance consists of: bodily injury liability; property damage liability; medical payments or personal injury protection (PIP); collision; comprehensive; uninsured/underinsured motorists coverage (UM/UIM). Also, other services are available like roadside assistance, rental reimbursement, gap coverage.
Here is a brief (general) description of each category: (Note: insurance company and state interpretation may vary. See individual state requirements/regulations and specific insurance company terms/definitions).
Bodily Injury Liability
This applies to injuries that you, the designated driver or policyholder, cause to someone else. You and family members listed on the policy are covered when driving someone else's car with their permission.
Medical Payments or Personal Injury Protection (PIP)
This pays for the treatment of injuries to the driver and passengers of the policyholder's car. PIP can cover medical payments, lost wages and the cost of replacing services normally performed by someone injured in an auto accident.
According to the Insurance Information Institute the following states require PIP coverage:
Arkansas, Delaware, Florida, Hawaii, Kansas, Maryland, Massachusetts, Michigan, Minnesota, New Jersey, New York, North Dakota, Oregon, Pennsylvania, Utah
Property Damage Liability
This pays for damage you or someone driving the car with your permission may cause to someone else's property. Usually, this means damage to someone else's car, but it may includes damage to utility poles, fences, buildings or other structures damaged by your car.
Collision
This pays for damage to your car resulting from a collision with another car, object or as a result of rolling over. It may cover damage caused by potholes on highways. Usually, collision coverage is offered with a deductible of $250 to $1,000, and of course, the higher your deductible, the lower your premium.
Even if you are at fault in an accident, your collision coverage will reimburse you for the costs of repairing your car, minus the deductible. If you are not at fault, your insurance company may try to recover the amount they paid you from the other driver's insurance company. If they are successful, you may be reimbursed for the deductible.
Comprehensive
This reimburses you for loss due to theft or damage caused by something other than a collision with another car or object, such as fire, falling objects, explosion, earthquake, windstorm, hail, flood, vandalism, riot, or contact with animals, e.g., birds, deer.
Usually, comprehensive insurance is offered with a $100 to $300 deductible, although you may want to choose a higher deductible as a way of lowering your premium. Comprehensive insurance will also reimburse you if your windshield is cracked or shattered. Some companies offer glass coverage with or without a deductible.
Some companies will offer a "glass repair" at no cost (if possible, like with a very small crack) rather than replacing the entire windshield. With this repair, the small crack is still visible, but stops the crack from enlarging, and it saves the cost of a replacement and/or deductible.
Uninsured and Underinsured Motorist Coverage
This will reimburse you, a member of your family, or a designated driver if an uninsured or hit-and-run driver hits one of you. Underinsured motorist coverage comes into play when an at-fault driver has insufficient insurance to pay for your total loss. Also, this coverage will protect you if you are hit as a pedestrian.
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Some Final Tips!
Play it safe! Read your insurance policy and ask your agent to show you in writing (point out the section) what your insurance actually covers. Ask questions before you might need to use the policy. Insurance documents are loaded with legalize phrases and meanings. Agents are used to newbies asking questions, but you need to ask it again if you don't understand.
Drive Safely