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U.S.
Department of Transportation
Technology for Safety – 5.9 GHz DSRC
§What it is
□Wi-Fi
radio adapted for vehicle environment
□Inexpensive
to produce in quantity
□Original FCC
spectrum allocation in 1999
□FCC
revised allocation in 2004 and
2006
§How the technology
works
□Messages
transmitted 10 times/sec (300m range – line of sight)
▪Basic Safety Message: vehicle position, speed, heading, acceleration,
size, brake system status, etc.
▪Privacy is protected (vehicle location is NOT recorded
or tracked)
§Benefits of DSRC
technology compared to radar/laser technology
□Reduced
price
□Improved
reliability à fewer false alarms
□Increased
performance à addresses more
crash scenarios
§Drawback of the
technology
□Both
vehicles need to be equipped to gain benefit
□Requires
security infrastructure
Image Source: USDOT