Answer: The premium you pay is a direct reflection of your driving record for the past three to five years depending on the insurance company. Insurance companies order driving records from the DMV of your residence state and from other states where you've been licensed. Statistics show that drivers with tickets and accidents are more likely to have accidents than drivers with clean records.
Why is it harder to get insurance if drivers in my household have bad driving records?
Answer: Many companies will not insure you if you live with a relative who has a poor driving record. If your teenager has a poor driving record, you may have trouble getting a preferred rate because he or she is defined as an "insured" under your policy.
Some companies will exclude this person by name from the insurance policy. Many companies will not insure anyone in the family unless every driver in the household meets their requirements.