THE COST 323 ACTION		4
ABSTRACT		7
I.	INTRODUCTION	8
II.	ROAD TRANSPORT AND WEIGH-IN-MOTION IN EUROPE
1. 2.	European transport and road networks Objectives of weigh-in-motion policy	10 15
III.	SURVEY INTO REQUIREMENTS IN THE COST 323 MEMBER COUNTRIES
1. 2. 3.	Organisation of the survey Summary of the replies received Summary of the requirements expressed in the survey	16 16 29
IV.	ANALYSIS OF VEHICLE WEIGH-IN-MOTION REQUIREMENTS ACCORDING TO FIELD OF APPLICATION
1. 2. 3. 4. 5. 6. 7.	Roads and pavements Engineering structures Techno-economic studies Road safety Road regulations Specific industrial and commercial requirements Lines of research and study	31 32 35 36 37 42 42
V.	CONCLUSIONS	47
VI.A.	REFERENCES (Presentation by heading)	49
VI.B.	REFERENCES (Presentation in order of appearance)	50
APPENDIX I : Survey and questionnaire		53
APPENDIX II : Accuracy of measurements		57

ABSTRACT

The curbing of overload violations would be more effective with more accurate weigh-in-motion (WIM) equipment. Currently, however, this only allows vehicles to be preselected for static weighing and for low speed weighing in some cases. The protection and management of the public heritage of roads and engineering structures require a knowledge of traffic loads in increasingly fine detail. Weighing vehicles in motion on chosen routes makes it possible to monitor weights and to assess the "aggressivity" of traffic. WIM reliability is very satisfactory for statistical or road safety studies.

Key words: Weigh-in-motion (WIM), overload inspection, road loading, traffic aggressivity.

Edited by the COST323 Management Committee
Published by the Belgium Road Research Center (BRRC), Brussels

Copies may be ordered free of charge from Ms. Sophie Jehaes, BRRC.

CONTENTS

ABSTRACT