Alarm Aims to Prevent Bus Rolling Incidents
A school district and a bus dealership in Indiana have combined efforts to develop a retrofit for school buses that they say enhances safety.
Fort Wayne Community Schools, the largest district in Indiana, has encountered numerous situations over the years that have been the result of drivers failing to engage the parking brake on buses with air brake systems when the bus was placed in neutral. When this happens, the bus can roll freely if it is parked on a hill.
The most significant incident in Fort Wayne involved a driver who dropped children off for a field trip and exited the bus, then discovered that the bus was rolling down a hill toward a busy roadway. The driver chased the bus to try to get back on board, but she fell beneath it and was run over by the rear wheels.
Gary Lake, transportation director for Fort Wayne Community Schools, says the driver in that incident only suffered compression injuries to the leg — no broken bones. But it reinforced the notion that something had to be done to prevent these types of mishaps.
Lake said that he and garage technicians Mike Emerson and Vin Smith have over the last several years tried to encourage manufacturers to come up with a system that warns drivers if the bus is in neutral and the parking brake has not been set.
Last spring, after a less-serious incident occurred, the discussion began again. This time, someone came up with an idea to solve the problem.
Brian Woodring, a product service and support specialist for Indiana Blue Bird dealership MacAllister Power Systems, was in the technicians’ office and overheard the discussion. Woodring had an idea: Put a low pressure switch on the air brake engage button and wire it to a seat belt with a buzzer.
Woodring came back in a few days and had a simple mockup of a system that could be wired to a conventional truck seat belt that had a low-volt buzzer and light that could be seen and heard by a driver. The alarm would sound if a driver unfastened his or her seat belt and had not engaged the air brake parking system.
Lake said that the design was shared with Indiana State Police officers and state Department of Transportation inspectors and was found to not impair with any safety functions of the bus. The concept was then shared with Mike LaRocco, director of the Office of School Transportation at the Indiana Department of Education, who Lake said found it to be a useful safety device and approved it for retrofit installation on school buses.
Fort Wayne Community Schools currently has three buses equipped with the system and is making plans to convert its entire fleet. The cost for conversion parts is $355 per bus.
Lake said that he is encouraging manufacturers to include the alert system on new buses.
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