In the last installment of National Bus Trader, "Fatigue Monitoring Technology" presented an overview of the approaches and devices in development, and available, to prevent and detect driver fatigue. But unlike prevention technologies, fatigue detection devices raise a unique question: What happens when they work?!
Little in public transportation is as challenging as driving load upon load of wheelchair occupants, with unique needs (and often unique chairs), in all directions, with last-minute one-of-a-kind trips dispatched into tight schedules created days, or even weeks, in advance. Yet this is precisely what paratransit drivers do - hour after hour, day after day.
With panoramic/wraparound windshields lying against the front plane, sun visors, tinted windshields, crossover and parabolic mirror systems, ergonomic driver compartments with tilting/telescopic steering columns and pneumatically-adjustable seats, video surveillance cameras and motion detection sensors - much less corrective lenses, sunglasses, annual vision examinations, and continual improvements in headlamps - one would think that bus drivers could see and react to large objects appearing directly in front of their vehicles. But, as many jurors learn, one would be wrong.
Comparing their relative safety to that of other vehicles, a number of motorcoach features come immediately to mind: Mass, monocoque construction pneumatic suspension, and fully-padded, forward-facing seats. Yet incidents like these still occur:
The previous article in this series emphasized the importance of transportation professionals selecting bus stops instead of students or their parents doing so. Regardless, while plenty of tools are available to help, the critical tool for evaluating and approving safe bus stops is a live Earthling.
In the last installment (STN, Jun, 2007), I stressed the importance of distinguishing between an actual bus stop and the waiting area across the street from it in terms of safety. But the selection of the stop and waiting area also involves concerns for student security. Sometimes, there are trade-offs that must be made. These trade-off are often complex and subtle. But they must be made correctly.
In those rare instances where the safety of transportation modes can be compared statistically, bus riders fare several decimal points better than bicycle riders. The risks associated with motorcycles are "off the charts." The Figure below illustrates these comparisons for "home-to-school" trips - trips that comprise 15 percent of all transit trips and 96 percent of all schoolbus trips.
Every responsible society has mechanisms to hold its citizens, and their organizations, accountable for their actions. With respect to safety, our society effects this goal through the enactment and enforcement of statutes and regulations, and through the process of civil litigation. As with most rules and most societies, many of our transportation organizations have discovered loopholes. Employing these loopholes, they have effectively reduced their liability exposure at the cost of compromising safety.