Planning

To achieve the most accurate measurement possible, planning the installation is essential.

Horizontal or Top Down?

The devices can be operated both directly next to the road or elevated and looking down from above. We recommend using a laser measuring tool or a laser pointer to align the device correctly.

	When mounted on a pole or mast you should point the sensor to the middle of the road (center line). This can be done easily by adjusting the tiltable bracket MT80-15. The bracket can be placed about 3-4 meters above ground. Please check the max range of the sensor. Important: The pole must not move in the wind
	When mounted next to the street we recommend a mounting height of 1.2-1.5m above ground. Line of sight should be completely horizontal.

Important Rules

The device works best when the following rules are observed.

	Lateral to movement TCR are side radars that detect motion from both directions simultaneously. The movement should be linear. Therefore place the sensor parallel to the movements direction and keep away from curves, crossings, driveways
	Distance to object LS-Devices: The sensor must be placed at least 50cm away from the target. HS-Devices: The sensor must be placed at least 3m away from the target.
	Avoid obstacles in FOV Make sure there are no obstacles such as walls, street signs, shrubberies, trees in the field of view. When placed beside water the device might detect the waves.

LTR vs RTL

The TCR traffic counters distinguish between 2 directions.

RTL
objects which come from the right and disappear to the left. The left LED will pulse once in this case.
LTR
objects which come from the left and disappear to the right. The right LED will pulse once in this case.

Measure distance to lanes

In order for the device to determine the velocities, the distance to the object must be known. The distance can be determined with a tape measure or a laser distance meter. Measurements are taken from the middle of a track to the front of the device.

• RTLDist = Distance in cm to the RTL movement line.
• LTRDist = Distance in cm to the LTR movement line.

Situation
	Two lanes, cross traffic (2L2D) This is typical for HS applications such as measuring traffic on interstate roads. RTLDist and LTRDist are different.
	Cross traffic on one lane (1L2D) This is typical for low speed traffic (LS) measuring bicycle lanes or small paths. In this case get the distance to the center of the track and set RTLDist and LTR Dist to the same value.