School bus electric stop alarms for safety signal

1). The Stop Sign is automatic turning.
2). Quality is complied with the international standard.
3). High retro reflection material makes the sign conspicuous to other vehicles.
4). School bus has red light flashing and the STOP paddle extended when school bus stop.
5). It can warn the other vehicles to stop and wait for children to get on and off the bus.
6).LED lights will stop flashing and the STOP sign is pulled in after receiving or discharging children