IMPORTANCE OF SURFACE CHARACTERISTICS

SIGNIFICATION DES CARACTERISTIQUES DE SURFACE

(1) TO GAIN A KNOWLEDGE OF ROAD CONDITIONS WITH HIGH-OUTPUT EQUIPMENT IN RELATION WITH ACCIDENTS WITH A VIEW TO DETERMINING THE INFLUENCE OF GEOMETRICAL PARAMETERS ON SAFETY AND DESIRABLE SAFETY LEVELS. (2) THE 1978 STUDY OF A 1500 KM NETWORK LED TO RESULTS RELATED TO ROADWORKS AND RAINFALL. A SECTION WITH A HIGH PERCENTAGE OF HEAVY-VEHICLE ACCIDENTS WAS EXAMINED AND RESULTS OBTAINED. FURTHERMORE THE INVESTIGATION INTO ACCIDENTS OVER TWO YEARS ON THE PARIS - LILLE MOTORWAY WAS CONTINUED. (3) TO COMPLETE STUDIES OF HIGHWAY AND MOTORWAY SECTIONS. SUMMARY OF RESULTS. SELECTION OF AN EXPERIMENTAL ITINERARY. ORIENTATION OF FUTURE STUDIES.