Rumble surfaces are intermittent short lengths of coarse-textured road surfacings on which vehicle tyres produce a rumbling sound. used in conjunction with appropriate roadsigns and markings, they can reduce accidents on rural roads by alerting the unwary driver to the need for caution on the approaches to road hazards and by guiding him into adopting a suitable rate of deceleration. If the driver reduces his speed suitably his tyres set up a reassuring rhythmic rumble as his vehicle crosses the intermittent surfaces. Should he fail to slow down, the beat of the rumble becomes quicker and quicker, and imparts a sense of urgency to which he involuntarily responds by braking.
Reference:
NITRR. 1977. Rumble surfaces. CSIR, NITRR: Transport and Road Digest (2), pp 4
National Institute for Transport and Road Research, & Transport and Road Digest (1977). Rumble surfaces CSIR. Retrieved from http://hdl.handle.net/10204/2266
National Institute for Transport and Road Research, and Transport and Road Digest Rumble surfaces. CSIR, 1977. http://hdl.handle.net/10204/2266
National Institute for Transport and Road Research, Transport and Road Digest. Rumble surfaces. 1977 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/2266
