Emergency Vehicle Warning Devices: Interim Review of the State-of-the-art Relative to Performance Standards, Volume 501
U.S. Department of Justice, National Institute of Law Enforcement and Criminal Justice, 1972 - Automobiles - 73 pages
What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
addition analysis appears Appendix appropriate approximately attenuated background beam bulb calibration changes characteristics characterization chromaticity color complex reaction described determine developed direction distance distribution driver effective intensity electronic emergency vehicle warning emergency warning equipment example experiments feet field Figure flashing light four frequency front function fundamental given goniometer harmonic horizontal horns illuminance incandescent lamp Law Enforcement less literature located measurements mechanical microphone mounted needed noise noticeability observer obtained operated output passed patterns performance standards photocell photometric photosensor physical planned present pressure problem procedure produced radiation range rear recognition recorder relative representative response rotating sample shows side signal similar simulation single siren situation sound levels specifications speed steady tape target vehicle traffic transmission types typical unit variation vertical visual warning devices warning lights