HOW WELL CAN AUDIBLE WARNING DEVICES OF EMERGENCY VEHICLES BE LOCATED BY THE DRIVER OF AN AUTOMOBILE
It was considered extremely useful to conduct an experiment to determine whether or not the directivity detection of emergency vehicle audible warning devices is a significant function in optimizing these devices. If the experiments indicated that automobile drivers cannot successfully determine the direction of the emergency signal, then there would be no need to perform phase measurements at the ears of drivers in the examination of the interior noise and the insertion loss of the body of vehicles that forms the basis for the optimization study. Accordingly, a series of direction determination experiments were performed, as described in the next section. It was concluded that aural localization of the direction of emergency vehicles is not practicable. Accordingly, complex measurements, such as the determination of the phase difference of the signal at both ears of the driver are not justified in the basic study of optimizing the audible warning devices of emergency vehicles.
- Sponsored by the Society of Automotive Engineers. Paper G- 14 to the 91st meeting of the Acoustical Society of America, Washingtin, D.C. April, 1976.
Bolt, Beranek and Newman, Incorporated1740 Ogden Avenue
Downers Grove, IL United States 60515
- Potter, R C
- Pei, H S
- Publication Date: 1976-4
- Features: Figures; References; Tables;
- Pagination: 17 p.
- TRT Terms: Detection and identification; Detectors; Drivers; Emergency vehicles; Experiments; Highway safety; Warning systems
- Subject Areas: Highways; Safety and Human Factors;
- Accession Number: 00152380
- Record Type: Publication
- Source Agency: National Safety Council Safety Research Info Serv
- Files: TRIS
- Created Date: May 31 1977 12:00AM