Good news for somnolent drivers: a new system that wakes them up if they are feeling drowsy on the wheels is all set to enter the market
RICHARD Grace, a sensor-systems scientist at Carnegie Melon University in
Pittsburgh, us, is a busy man. He has
been involved in figuring out how to
prevent truck drivers from falling asleep
during their hectic highway journeys -
a cause for nearly 30-40 per cent heavy-
truck accidents in the us. The solution,
he says, could be the 'Drowsy Driver', a
device that uses sounds and scents to jolt
drowsy drivers.
Drowsy Driver is a combination of
computerised sensors that detects driver
fatigue and sends alarms to combat it.
These sensors work by observing a vehicle's weaving or detect the nodding of
driver's head - both signs of sleepiness
- and send signals to the truck-based
computer. And if the signs indicate that
the driver is dozing-off, the computer
launches a series of warnings - beginning with a gentle voice saying 'wake
up', progressing to louder and
more irritating beeps and alarms and
finally culminating in the aroma of a
peppermint spray, that has mind
alerting qualities.
Drowsy Driver's brain consists of a
tiny computer placed between the
driver's and the passenger's seats.
Information about the alertness of the
driver is feed into it from sensors
throughout the truck. One such devise is
a thin silicon chip mounted vertically
inside the computer box. Called the
accelerometer, it bends if the cab
weaves, sending warning signals to the
mother computer. Sensors have also
been placed inside the steering column
to detect jerky movements in the wheel.
Another is placed inside the cabin ceiling that monitors the head movements
of the driver. "Alert people always move
their heads a lot," says Grace.
Working on a us $1.2 million grant
from the United States National
Highway Transportation and Saftey
Administration, Grace hopes to develop
the working model of Drowsy Driver by
the end of 1996. He figures it will cost
about us $1,000 to outfit a rig with
Drowsy Driver. And ultimately, a version of the system could go into consumer vehicles.
But driver's fatigue is a touching
subject in the trucking world. Road
transport companies are often criticised
for setting impossible itineraries that
do not account sufficiently for driver's
fatigue, traffic on the roads and weather
deliays. Although most countries have
rules that regulate how long the truckers
can drive without rest, it is frequently
flouted to meet the demands for punctuality. Grace's proposed technological
innovation has raked up more questions
than it answers.
Mike Warner, a driver with Averitt
Express Inc, an American trucking company, does not approve of peppermint
fumes being pumped into his driving
cabin. "False alarms could startle drivers
and can itself cause accidents," he
argues. Grace concedes, "We have to
walk a fine line between what is irritating and what will actually wake
someone up.
There are also those
who fear that drivers,
knowing very well that they
have a wake up alarm system, would feel invulnerable. "Indeed, no matter
how well Drowsy Driver
does its job in warning drivers, it obviously cannot
force them to pull up,"
argues an official with
Averitt. Consumer groups
such as Centre for Auto Safety in Washington argue in favour
of tightening restrictions on truckers'
driving hours, and also a more aggressive policy while granting licences to
drivers.
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