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Technical inspection violations: camera installation requirements

1. The detection of technical regulation violations (operation of vehicles without a valid inspection/authorization) requires the installation of video cameras with an enabled license plate recognition (LPR) function. These cameras may also be used to capture and recognize rear license plates of vehicles. An example of camera placement is shown in Figure 1.

Figure 1.

Map view of a road intersection showing two LPR camera icons at opposite corners with red sight lines aimed across the roadway to capture license plates

Examples of images obtained from LPR cameras are shown in Figure 2.

Figure 2.

LPR camera view of an empty multi-lane road with a pedestrian signal pole in the foreground and a timestamp overlayLPR camera view of an empty road lane with a turn-arrow marking, angled to capture approaching vehicles

 

2. To build an evidentiary base and improve detection of secondary vehicle characteristics, including at night, overview video cameras (OV) must be used. An example of camera placement is shown in Figure 3.

Figure 3.

Map view of a road intersection with two OV camera icons and a shaded field-of-view zone spanning the crosswalk and roadway between them

Examples of images obtained from OV cameras are shown in Figure 4.

Figure 4.

OV camera view of an intersection with an SUV and other vehicles in traffic, a traffic light visible in the distanceOV camera view of a van and other vehicles parked or stopped along a wide roadway with turn-lane arrow markings

 

3. To generate violation events, camera installation must comply with the requirements specified in Table 1.

Table 1

Preliminary Technical Requirements for OV Cameras

CharacteristicRequirement
Tiltfrom +15° to +75°
Panfrom –75° to +75°
Rollfrom –5° to +5°
Image quality 50 pixels/meter or higher
Illumination 10 lx or higher
Mounting height from 5 to 15 meters above the road surface

Preliminary Technical Requirements for LPR Cameras

Tilt angle relative to horizon (LPR)from 10° to +30°
Tilt angle relative to vertical (LPR)from –20° to +20°
Permissible roll (LPR)from –5° to +5°
Image quality (LPR)300 pixels/meter or higher
Illumination (LPR)50 lx or higher
Mounting height (LPR)from 6 meters or higher