In Texas an SR-22 insurance policy is a certificate of insurance that shows the Texas Department of Public Safety (DPS) proof of insurance for the future, as required by law. SR-22 insurance is not necessarily "high risk" insurance. It is motor vehicle liability insurance which requires the insurance company to certify coverage to DPS, and the insurance company must notify DPS anytime the policy is cancelled, terminated or lapses.
Once the Texas Department of Public Safety (DPS) receives notification from the insurance company that the policy is cancelled, terminated, or lapses appropriate enforcement action may be taken. If the SR-22 is still required and there is not a valid SR-22 on file, the driving privilege and vehicle registration is suspended
There is form SR-26 which must be filed by the insurance carrier to cancel the SR-22. If your son no longer needs the SR-22 he should inform his insurance company to remove it. Some insurance carriers may want him to show documentation from the DPS that the SR22 can be taken off before doing so and filing the SR-26. Your son should contact the DPS to confirm that he can remove the SR-22.
The SR-26 (cancellation of SR-22 insurance certificate) is a form submitted by an insurance company to notify the department that the SR-22 (insurance certificate) issued by that company has been canceled. The filing of form SR26 may initiate suspension action by the department if the individual's driver record indicates that the SR22 (insurance certificate) is still required at the time the SR26 is received. That is why your son will want to make certain the SR22 is no longer required by the state. The DPS and his insurance agent should be able to provide him with more information on how remove the SR22.