A motorist who caused a three-car collision in which former Attorney General William French Smith and his wife were injured was sentenced Tuesday to seven years and eight months in state prison.

In a statement included in a probation report, Smith asked that Alfred Romero, 28, who was convicted of driving under the influence of drugs, be given the maximum possible sentence, a request that was granted by Superior Court Judge Warren Deering.Romero, of Los Angeles, was convicted Jan. 10 of driving under the influence of the hallucinogenic PCP, hit-and-run driving and two counts of driving with a revoked driver's license, Deputy District Attorney Lester Kuriyama said. All are felonies except for the latter two, which are misdemeanors.