27WX
TrafiCam with TI (9 wires)
12.Appendix
Appendix 1: Lens selection and camera positioning
2 types of TrafiCam sensors are available:
• Wide angle lens
Vehicle presence detection in the area close to the camera: detection of vehicles at the stop bar
• Narrow angle lens
Vehicle presence detection in the area more distant from the camera: advance detection of vehicles
approaching the intersection
Wide angle lens
Narrow angle lens
Version Focal distance
Angle of view
Vertical Horizontal Corner to
corner
Detection area
Wide angle 3,0 mm 65° 95° 103° 0 to 25 m (0 - 80 ft)
Narrow angle 8,0 mm 22° 32° 39° 15 to 75 m (45 - 250 ft)
TrafiCam lens specifications
Guidelines for the sensor position
• Height: mount TrafiCam as high as possible.
• Position towards the road: position TrafiCam overhead if possible. If not, a side-fired position next to the fastest
lane is recommended.
• Orientation: do not point TrafiCam at the horizon. Place the camera in a position that will have minimum exposure
to direct sunlight.
The height and position of TrafiCam are important factors for minimizing occlusion. Occlusion occurs when a vehicle
blocks out part of the field of view of TrafiCam. Please contact your supplier if you wish more information on how to
reduce or avoid occlusion.
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