Radar detection can have distinct advantages in some transport-related situations. Navtech technology can often fulfil detection and monitoring functions more reliably and cost-effectively than vision-based systems.
Radar cannot completely replace visual verification, what it does is overcome the limitations and provide additional capabilities and reliability. As a radar does not depend on light, it can work in total darkness and the technology is less susceptible than vision-based systems to vibration - for instance on a bridge being crossed by heavy loads.
The ClearWay solution's rate of false alarms is 10 times better than with visual systems and is enhanced by rules which can be abled or disabled. See Article
Navtech Radar will be at Intertraffic 2016, Amsterdam, 5th-8th April.