Dedicated short-range communications (DSRC) is a technology for direct wireless exchange of vehicle-to-everything (V2X) and other intelligent transportation systems (ITS) data between vehicles, other road users (pedestrians, cyclists, etc.
[1] DSRC, which can be used for both one- and two-way data exchanges, uses channels in the licensed 5.9 GHz band.
In October 1999, the United States Federal Communications Commission (FCC) allocated 75 MHz of spectrum in the 5.9 GHz band for DSRC-based ITS uses.
[4] In August 2008, the European Telecommunications Standards Institute (ETSI) allocated 30 MHz of spectrum in the 5.9 GHz band for ITS.
Other applications include: DSRC systems in Europe, Japan and the U.S. are incompatible and have significant differences, including spectrum and channels (5.8 GHz RF, 5.9 GHz RF, infrared), data transmission rates, and protocols.