Opposite Lane / Overtaking

Opposite Lane

An Opposite lane violation is captured when a vehicle enters the oncoming lane (the side of the roadway intended for the opposite flow) and moves toward that flow.

The platform determines this by analyzing video from a camera with an Opposite lane traffic object. The violation is captured when the vehicle crosses the Signal line of that object in the direction opposite to the arrows.

When Record Overtaking violations is also on, an Opposite lane violation is captured if the vehicle crosses that Signal line in the direction opposite to the arrows and, during the configured interval, the linked Speed control zone has no other vehicle traveling above the Speed limit.

To set up capture of this violation:

1. Add a violation name of type Opposite lane.
2. On the camera, in the CarTrack Pro module settings, add an Opposite lane traffic object.
3. Create a road object.
4. Bind cameras to the road object.
5. Set the violation control rules.
6. Turn on Opposite lane / Overtaking when turning on control on the road object.

Overtaking

An Overtaking violation is captured when a vehicle enters the oncoming lane and, during the configured interval, another vehicle in the linked speed control zone is traveling above the Speed limit.

The platform determines this by analyzing video from cameras with Opposite lane and Speed control zone traffic objects. An Overtaking violation is captured when Record Overtaking violations is on in the Opposite lane control rule, the vehicle crosses the Signal line of the Opposite lane traffic object in the direction opposite to the arrows, and, during the configured interval, another vehicle in the linked Speed control zone is traveling above the Speed limit.

To set up capture of this violation:

1. Name the violation.
2. On the camera, in the CarTrack Pro module settings, add Opposite lane and Speed control zone traffic objects. Both objects can be on one camera or on different cameras.
3. Create a road object.
4. Bind cameras to the road object.
5. Set the violation control rules. In the rule, turn on Record Overtaking violations.
6. Turn on Opposite lane / Overtaking when turning on control on the road object.

Set Violation Control Rules

Before setting the rules, bind cameras that have CarTrack Pro configured to the road object.

On the road object page, or in the road object options under Settings > Road Objects, select Violation rules.

To set up capture of Opposite lane and Overtaking violations:

1. In the camera list, select a camera that has an Opposite lane traffic object configured in the CarTrack Pro module. The traffic object must already exist for that camera.
2. Click + to add a rule. This creates a rule of the Opposite lane type.



3. In Violation name, select a previously created violation name of the Opposite lane type.
4. For the added rule, set the following:

   

   • Vehicle type: optionally select the vehicle types for which this violation should be captured. If no type is selected, the violation is captured for all vehicle types.
   • Overview camera: optionally select an overview camera bound to the road object, to receive extra video frames of the violation.
   • Record Overtaking violations: turn on if overtaking should be captured on this segment. The option is off by default. When it is on, set the following:
     • Violation name: select a previously created violation name of the Overtaking type.
     • Speed control zone: select the Speed control zone traffic object added on a camera of type Opposite lane / Overtaking. The zone is checked for an overtaken vehicle. An overtaken vehicle is a vehicle traveling above the Speed limit set in the Speed control zone traffic object settings.
     • Time before crossing, sec: time interval in which the platform checks for an overtaken vehicle. The interval is measured from the moment the vehicle crosses the Signal line of the Opposite lane traffic object. The allowed range is from -10 to 10, with 0.1 precision. A positive value is before the crossing, a negative value is after the crossing, and 0 is at the moment of crossing. The default is 0. Example: 2 checks for an overtaken vehicle during the 2 seconds before the line is crossed; -1 checks during the 1 second after.
5. Click Save.

Turn On Control

Control on a road object stays off until it is turned on. On the road object page, open the Options menu and select Turn on control. In the Turn on Road Object control window, select Opposite lane / Overtaking and click Turn on.

With control on, the platform captures each violation and lists it on Find Traffic Rule Violations.