Synonyme wurden verwendet für:
Traffic
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keywords:(Traffic signs)
Traffic lights relieve congestion
Traffic regulated by automatic control
Lines painted on the highways mark traffic zones
Choice of highway signals and signs
Following the signs of the times
American engineering council's signal report is submitted
Recommendations as to street traffic signs
Timing traffic lights correctly
Automatic signals develop with traffic needs
Special warning signs for Wisconsin highways
Semaphore signals for road traffic control
Electricity as an aid to road transport
Recommendations as to street traffic markings and safety zones
Signals should move traffic not stop it
The use of automatic signals at light-traffic intersections
Short signal cycles speed up traffic
New Uniform Traffic Institutions in Prussia