Traditionally,
traffic recording was accomplished by stretching a rubber tube
across a roadway.
The current method works by measuring the pulse of the air
as a vehicle runs
over the tube, which is nailed to the highway. The air is pushed
to the end of the
tube where there is a counter. Axles are then counted and divided
by two. This
method required a field technician to park on the side of the
highway,
nail the tube
down on one side of the roadway, cross the roadway and nail the
other end of the
tube on the opposite side.
With AxleLight,
the field technician simply mounts the device to a guardrail or
post along the
side of the roadway. AxleLight emulates a road tube with a beam
of light. It does
not require a reflector on the other side of the road and is
completely
installable on one side of the highway. The device counts traffic
when
the laser hits
vehicle axles on the roadway.
“Not only does
AxleLight keep field technicians off the roadway, but it also keeps
drivers safe,”
said Vickers. “It is very difficult to ensure the old rubber tubes
stay
in place on any
U.S. highway that has a high volume of traffic. The road tubes
can come off the
roadway and either strike a vehicle or wrap around the axle of
a vehicle and
cause damage. With AxleLight, that’s no longer a concern.”
The
battery-operated AxleLight is now available to states and
municipalities
across the
country. The transportation departments of more than half a dozen
states have
received product demonstrations. According to Vickers, many states
were so impressed
by AxleLight that they are working diligently to secure funding
to purchase the
revolutionary sensor.
“The greatest
benefit of AxleLight is that it keeps road technicians out of
harm’s
way,” said Ray
Deer, Director of Engineering for Quixote Traffic Corporation.
“State
transportation departments have been pushing for a non-intrusive
method of
counting traffic so personnel do not have to enter dangerous
traffic.
AxleLight is the
only product available on the market that provides that.”
“A unique aspect
of AxleLight is that it is a new sensor for existing equipment,”
Deer added. “It
plugs directly into Quixote’s tried-and-true Automatic Data
Recorder series
of products.”
AxleLight can
also be used for more than just counting vehicle axles. When used
with another
AxleLight unit and Quixote’s Automatic Data Recorder, AxleLight is
actually able to
classify the vehicles into the FHWA classification scheme. State
transportation
departments can now tell which types of vehicles – cars, pick-up
trucks, local
two-axle delivery
trucks,
four-axle tractor trailers,
five axle
tractor trailers or
dump trucks –
are using their
roadways. This
process can
even perform
bi-lane vehicle
classification
for up to four
lanes, which
helps states plan
highway
expansions.