Interstate, information highways unite to smarten transportation :
The digital display mounted over Interstate 376, four miles before the Squirrel Hill Tunnel, warns drivers in bright-orange letters how long they will wait in traffic.
On this afternoon, it takes four minutes. But if there is congestion or a crash ahead, technicians at the Western Regional Traffic Management Center in Bridgeville can instantly update the system, warning drivers if they should detour.
The center opened in 1998. Since then, the melding of transportation and technolo...