DISCUSSION. ROADS AND THEIR RIDING QUALITIES. ROAD ENGINEERING DIVISION.

Keywords: ROAD RESEARCH BOARD, MINISTRY OF TRANSPORT, MACHINERY, ROADS, RIDING, QUALITY, SURFACE, IMPERFECTIONS, IRREGULAR, DISTURBANCE, SPEED, VEHICLES, APPARATUS, MACHINE LAID, DRESSING, QUANTITY, MATERIALS, BITUMEN, CONCRETE, SURFACING, MACHINES, METHODS, MEASUREMENT, ROUGHNESS, JOINTS, VERTICAL, VIBRATIONS, DETERIORATION, GERMANY, UK