"Traveling Smart: High Tech Traffic Management on the
New Jersey Turnpike," 1994
The amazing part is that the Turnpike Authority actually knows
if traffic needs to be diverted. It can change the speed limit to reduce congestion
and even warn motorists of problems on the road. Here, I'll show you.
This 46-mile stretch of the Turnpike from Interchange 8A to
Route 46 is one of the smartest roads in the country. Embedded in the pavement
are about a thousand sensors that detect the flow of traffic. They are part
of the Turnpike Authority's "Automatic Traffic Surveillance & Control
System," or ATSCS. Information from these sensors is transmitted to the
traffic operations center in New Brunswick. If an accident or traffic jam is
detected, the nearest of three State Police substations is notified.
Background audio of police notification.
Motorists can be warned and even rerouted with these
changeable message signs. There's 73 of them. The signs are also used to communicate
variable speed limits and speed warnings. With road sensors and changeable signs
the ATSCS can keep tabs on the Turnpike 24 hours a day.