STRAIGHT TALK ABOUT WIRELESS FOR TRAFFIC APPLICATIONS
R Ferras, Jean Tate Hiebert · IMSA journal · 2004
A number of factors must be considered when choosing wireless technology for traffic applications. These factors include reliability and immunity to interference, the value of radios designed for industrial applications, and what it means for wireless products to be specifically designed for traffic. For instance, in choosing between the two types of technologies available, FHSS (Frequency Hopping Spread Spectrum) and DSSS (Direct Sequence Spread Spectrum), buyers should consider which of these would be more dependable in the non- licensed environment. Wireless devices must co-exist with three radio bands (902-928 MHz, 2.400-2.4835 GHz, and 5.7525-5.850 GHz) allocated by the FCC. In terms of what to look for in selecting a wireless traffic application, it is important to look for a device that can be easily integrated into an existing system. Wireless technology is ideal for traffic applications because it is non-disruptive, has little impact on the environment, is easily deployed, and is less expensive than hardwire installation.