A motor vehicle used in a ridesharing arrangement that has a seating capacity for not more than fifteen persons, including the driver, shall not be a “bus” under those portions of this title relating to equipment requirements or rules of the road. A motor vehicle used in a ridesharing arrangement that has a seating capacity for not more than fifteen persons, including the driver, shall not be a “bus” or “commercial vehicle” under the portions of this title relating to registration.