The ultimate AVC evolution

Demand for detection and automatic vehicle classification on toll lanes has always had a positive growth, which has required an evolution of the traditional AVC (Automatic Vehicle Classification) system, an evolution encompassing several aspects: devices, information reliability, installation and maintenance.

AVC is usually used for purposes of audit, revenue collection management, statistics generation and in shadow tolls.

The basic AVC system is a set of sensors that detects the different vehicle categories, based on various criteria, mainly: number of axles, detection of dual wheels, volume, height and profile. Obtaining this information depends on the add-ons installed on the AVC device. Initially these devices were electro-mechanical, composed of treadles and ground fixing elements. Later, they were replaced by photoelectric elements, which is what Tecsidel offers as AVC-Optical system. This evolution allowed to avoid long-term traffic cuts in toll lanes due to breakdowns in the traditional treadles or ground fixing elements.

Tecsidel offers an AVC-Optical system based on a non-intrusive optical technology, with redundant sensors to continue classifying, in spite of detecting any impact on its components. This AVC device works as a peripheral of toll lane management system and through Ethernet protocol may send alarms which are received at the station and control center. MTTR does not exceed 20 minutes. Whereupon, this system dramatically reduces maintenance requirements.

However, Tecsidel, in their constant search for leading-edge solutions, believed in a further evolution of the AVC system and continued to investigate until they found AVC Laser system. One of the Tecsidel AVC Laser system is composed of two laser scanners located at different heights, allowing classifying the vehicle and getting all the above information, with no need to increase the installed add-ons on the solution.

AVC Laser has a reliability of >99% in its classification results. Many more adjustments can be made in real time, without direct intervention costs. This state-of-the-art solution is a faster and more efficient self-learning system.

The main functionalities of this qualified integrated software solution are:

  • Establish communication with the detector to capture the vehicle shape and interpret what category it belongs to.

  • Laser scanners do not require frequent cleaning

• Filter objects that are not vehicles and those that blur the height.

• Correct wrong values caused by beam reflection on windshields and infinite heights caused by dark surfaces.

An AVC Laser system solution can be installed every two lanes offering a significant number of advantages:

• Non intrusive installation.

• High reliability and accuracy for all measurements, especially in trailer detection.

• Robust device that only requires a quick and easy maintenance.

• Not sensitive to aggressive environmental conditions.

• No wear because of vehicles movement.

• Suitable for high and low speed situations and complex queue situations.

The AVC Laser system that Tecsidel installs in stop and go toll lanes reliably detects the flow direction and items carried on top of the vehicle. These operations are validated in Pre-AVC and Post-AVC. The Pre-AVC mode detects and classifies the vehicle before the payment is made in the entry area of the lane, so the system can automatically set the fee additionally to post-AVC functions. The Post-AVC mode makes the classification after the payment is made in the exit area of the lane, for operators and statistics systems.

All these advantages explain why this technology has become so demanded by concessionaires. Tecsidel AVC Laser is the ultimate evolution of the traditional AVC system.

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