The National Transportation Safety Board warned against the...
The National Transportation Safety Board warned against the potential risks to public safety of allowing Wi-Fi use of the 5850-5925 MHz band on a secondary basis, because the spectrum is set aside for a national vehicle-to-vehicle warning system. Last week,…
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the automotive industry also opposed the proposal unveiled in January by former FCC Chairman Julius Genachowski at CES (CD May 31 p4). “The implementation of this technological opportunity to improve transportation safety so significantly must not be compromised by issues associated with interference on the 5 GHz band,” the NTSB said (http://bit.ly/ZLt3KH). “The NTSB is not opposed to spectrum sharing in principle, but the security of preestablished communication frequencies related to transportation safety must first be ensured. Spectrum sharing could put the frequencies at risk of dangerous interference, and much is still unknown about frequency interference when it comes to vast numbers of connected vehicles in motion.” NTSB has advocated intelligent vehicle technologies “since the mid-1990s,” the filing said. “The NTSB first addressed collision avoidance during its investigation of a 1995 multivehicle collision in Menifee, Arkansas, in which a commercial vehicle entered dense fog, slowed from 65 mph to between 35 and 40 mph, and was then struck from behind. Subsequent collisions occurred as vehicles drove into the wreckage. ... Even then, before today’s wirelessly connected world existed, the need to establish dedicated communication airwaves for technologies that could prevent such collisions was recognized."