ClearWay Radar

ClearWay Radar

Effective roads control in all environmental conditions

ClearWay is an innovative solution based on radar technology for major roads and highways control that enables to detect critical situations such as:
  • Incident detection
  • Queue detection
  • Pedestrian detection
  • Debris detection
  • Anomalous speed detection
Each radar sensor sweeps a full 360 degrees every second (1Hz frequency) in the pre-defined detection zones using a millimeter wave samples method on 76-77Ghz frequency band, with very low power (about 10mW). Thanks to continuous scan cycles, the radar can determine the exact location, speed and path of travel of the targets (vehicle, people, etc.…) with a 25 resolution.

Radar data are sent to an alarm software that, according to programmed rules, can detect anomalous traffic situations. It is possible to set up different types of alarm rules depending on the area (e.g. lanes of the carriageway, hard shoulder, adjacent lanes, ect.), speed (slow moving or stopped vehicles, too fast moving vehicles, ect), targets number (queue, traffic jams).

Long detection ranges

A single ClearWay radar covers hundreds of meter of road surface (up to 1km) both with and against the traffic flow, to identify incidents on a lane by lane basis, with high accurancy. This detection range is much longer compared to other solutions based on cameras that usually have a coverage range of 100-200 meters with high false alarms rate.

A single radar for several lanes

A single ClearWay radar can control sereval lanes at the same time, with the possibility to single out the lane where the incident occurred or where the alarm was detected. Typically a single radar can control 3-4 lanes with the possibility to pinpoint the exact lane and location of the incident (or of the alarm situation). In fact, through the interface it is possible to set up the exact position of each lane in order to identify the presence, speed and direction of vehicles for each lane.

Effective in all weather and light conditions

ClearWay radars guarantee optimal performances even in extreme weather and light conditions such as heavy rains, fog, snow, quick change of lights. The radar solution is generally unaffected by environmental conditions whereas other technologies like cameras with video analysis usually struggle with the changing weather or light conditions that impacts on image quality. ClearWay radars use a scanning method with electromagnetic waves of 76-77Ghz that can pass through rain/fog/snow maintaining high performances. Contrary to cameras, radars are not based on images therefore they have very effective even without any light.

Very low false alarm rate

Clearway radars guarantee very low false alarm rate respect to other automatic detection technologies for critical road situations. In fact Clearway solution is not based on images analysis and has high performances in all working conditions. For example, video analysis systems based on cameras have very high false alarm rate since their analysis algorithm is particularly sensitive to critical working and environment situations, such as:
  • rain, fog, snow etc. that reduce system efficacy and cause false alarm due to the movement of atmospheric agents;
  • light reflection due to reverberation of asphalt or cars headlamps that creates sudden light variation into the scene;
  • shadows that mislead video analysis systems as the shadow may be considered as a moving target in the analysis area.
For all these aspects, ClearWay radars are for sure a more reliable solution compared to cameras for automatic detection of main roads and highways.

Low maintenance costs

Contrary to other technologies that request frequent ordinary maintenance (e.g. camera cleaning), radars need very little maintenance. Accumulated dusts on radars do not affect their performance; therefore it is not necessary to plan cleaning interventions. The producer recommends a 15 minutes preventive maintenance every 3 years. ClearWay radar MTBF is 75.000 hours (about 8 years).

Stationary targets detection

Unlike doppler radars, ClearWay radars thanks to millimeter waves can detect stationary targets (e.g. stationary vehicle, immobile pedestrian) within a 25 resolution.

Electromagnetic compatibility

ClearWay radars have a restrained electromagnetic emission (about 10mW) and are compliant to electromagnetic emission standards: ETSI EN 301 091-1 including ENV 50166-2 standard (Human exposure to electromagnetic fields), that guarantee total people safety.

ClearWay Demo Video

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