Stop your car when you see lights flashing on a school bus. Red flashing lights indicate that the bus is stopped and students are getting on or off. Don’t start driving until the red lights stop flashing. Be aware that a child may dash across the street.
School Bus Law
Chapter 90 Section 14
When approaching a vehicle which displays a sign bearing the words SCHOOL BUS and which is equipped with front and rear alternating flashing RED signal lamps which are flashing and the vehicle is stopped to allow pupils to alight from or board, a person operating a vehicle SHALL, except when approaching from the opposite direction on a divided highway, bring his vehicle to a FULL STOP before reaching the school bus and shall not proceed until the warning lights are deactivated, unless directed by a police officer duly authorized to control the movement of traffic. Any person who violates the provisions of this law SHALL be fined not less than two hundred dollars ($200). A second or third subsequent conviction shall be reported forthwith by the court to the registrar who shall revoke immediately the license or right to operate a motor vehicle.
School bus drivers do have the authority to turn in your license number to the police and you can get a ticket from the drivers referral!