Key signals targeted, officials say. By Sharon Bernstein and Andrew Blankstein . ... The engineers’ arrests last Friday point up the vulnerability of L.A.’s complex traffic control system.

LOWER ALLEN TOWNSHIP — A traffic signal control box at Rossmoyne Road and Route 15 north that was damaged after a crash on Halloween will be replaced Friday, according to ...

The signal control box at a four-way intersection on Route 22 in Murrysville must be replaced after being damaged in a traffic accident Friday.

Ohio State University engineers are working to make the traffic control boxes that stand beside major freeways smarter. They've developed new software that helps the computerized boxes locate road ...