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https://www.nationalacademies.org/trb/events

STUDY OF FURTHER WAYS OF MAKING USE OF TRAFFIC OBTAINED FROM THE AUTOMATIC DETECTING STATIONS OF VEHICLE-ACTUATED TRAFFIC LIGHT CONTROL SYSTEMS.

UNTERSUCHUNG UEBER WEITERE MOEGLICHKEITEN DER NUTZBARMACHUNG VON VERKEHRSDATEN AUS AUTOMATISCHEN ERFASSUNGSZAEHLSTELLEN VERKEHRSABHAENGIGER SIGNALSTEUERUNGSSYSTEME

TAKING THE CITY OF AACHEN AS AN EXAMPLE, IT IS HOPED TO VERIFY WHETHER THE AUTOMATICALLY OBTAINED TRAFFIC DATA FOR VEHICLE-ACTUATED TRAFFIC SIGNAL CONTROL CAN ALSO BE USED, IN A NETWORK WHICH IS SIMPLE ENOUGH TO BE CLEARLY PICTURED AND WITH ADEQUATE AVERAGE DENSITY OF DETECTOR POINTS, FOR OTHER TRAFFIC PLANNING PROBLEMS. FOR EXAMPLE, IT WOULD SEEM POSSIBLE TO ARRIVE AT THE LOADING OF THE MOST IMPORTANT JUNCTIONS WITH FEW ADDITIONAL MEASUREMENTS, FROM THE LOADING OVER THE CROSS SECTION OR PER LANE, BY MEANS OF SUMMING AND DIFFERENCE FORMING SYSTEMS LINKED BY LOGIC CIRCUITS; TO CHECK THESE TRAFFIC LOADING PLANS BY CONTINUOUS RECORDING OF THE DAILY AND WEEKLY VARIATION IN ROTATION; TO DRAW CONCLUSIONS AS TO THE DEVELOPMENT TREND OF THE INDIVIDUAL TRAFFIC STREAMS, AND TO SUPPLEMENT THE RESULTS OF DIVERSIONS WHICH HAVE BEEN FORECAST. THE DATA OBTAINED FROM THE AUTOMATIC DETECTORS SHOULD ALSO BE USEFUL IN THE CALIBRATION OF DIVERSION MODELS. FROM THE RESULTS OF THE STUDY, CONDITIONS WILL BE DERIVED WHICH, IN THE SETTING UP OF COUNTER PROFILES FOR VEHICLE-ACTUATED SIGNAL CONTROL SYSTEMS, WOULD HAVE TO BE TAKEN INTO ACCOUNT, IN ORDER THAT THE DATA OBTAINED MAY BE USEFUL FOR OTHER TRAFFIC PLANNING PROBLEMS.