Ride On bus system is testing a turn warning alert vehicle on four of its buses that notifies pedestrians of a turning .
When a bus operator turns the steering wheel 45 degrees in either direction, an audible warning is heard outside of the bus in the direction of the turn announcing that the bus is turning. An optical sensor installed inside the steering column is triggered when the vehicle turns. The volume of the warning can be adjusted.
The system is manufactured by Clever Devices.