RECOMMENDATIONS FOR THE USE OF SIMPLIFIED TRAFFIC SURVEY METHODS AT OUTER CORDONS

RICHTWERTE ZUR ANWENDBARKEIT VEREINFACHTER VERKEHRSBEFRAGUNGSMETHODEN AN AUSSENKORDONEN

ROAD INTERVIEWS WILL NOT BE ABLE TO BE DISPENSED WITH IN THE FUTURE EVEN WHEN THE TOTAL TRAFFIC MODEL IS FURTHER DEVELOPED. THERE IS HOWEVER A NEED TO CHECK THE EXTENT TO WHICH THE SURVEY DURATION CAN BE LIMITED, WITHOUT THE DATA OBTAINED BECOMING LESS ACCURATE. THE OBJECT OF THE RESEARCH IS TO SUPPLEMENT PREVIOUS WORK BY STUDYING A WIDE-RANGING DATABASE CONSISTING OF SEVERAL TRAFFIC SURVEYS UNDERTAKEN IN RECENT YEARS (1972-1976), AND TO CHECK RESULTS. DATA ON THE VALIDITY AND RELIABILITY OF SHORT TERM TRAFFIC SURVEYS WILL THEN BE ABLE TO BE GENERALISED. RESULTS SHOULD LEAD TO RECOMMENDATIONS FOR UNDERTAKING SHORT TERM TRAFFIC SURVEYS IN THE FUTURE.