sujet


DYNAMIC EVALUATION AND DISPLAY OF PARKING SPACES FOR HEAVY GOODS VEHICLES, Saxony-Anhalt, Germany

, 2011

Challenge

In the pilot projects on motorway A2 in Saxony-Anhalt, telematic control for HGV parking at service and rest areas with different detection methods will be tested.

Details

 

At the service area Börde in driving direction Berlin, the occupancy of HGV parking spaces will be determined by means of intelligent loops.

Objective is to reliably determine the actual occupancy of the parking spaces (total error rate < 10%, error rate per detection point < 5%) and to neglect those vehicles leaving the parking area without actually parking.

Project content

The project consists mainly of the detection, evaluation and transmission of traffic data with:

  • 9 Double inductive loops for detecting and adding up the number of HGVs in the parking spaces (no monitoring of individual parking spots)
  • 2 Video cameras used for traffic monitoring, for supporting the winter service, for supporting the police fighting crime as well as for monitoring the system functions and accuracy of the display
  • One LED-sign displaying the number of free parking spaces

Nine detection points with inductive loops in the lanes determine the occupancy rate of the parking spaces. The passing curves are evaluated by means of a special algorithm. With this, the entering and leaving vehicles can be compared and matched.

By means of the protocol TLS-over-IP, the vehicle characteristics determined by the algorithm are forwarded as unique IDs to the parking management center. There, the free spaces are evaluated by calculating the entering and leaving vehicles, not tracking individual vehicles but counting similar vehicle patterns. The number of spaces is then forwarded to the display sign in LED technology.

No individual vehicles are tracked but similar vehicle-patterns are counted. The system uses a detector newly developed for this application with special software.

A particular challenge in this project is - in contrast to applications on motorways and interurban roads - that all kinds of traffic conditions such as sudden speed changes, stop and go traffic, maneuvering and reversing vehicles must be considered.

 

In another project, the rest area Krähenberge will be equipped with a system based on video technology.

The system consists of 8 video cameras determining the available HGV parking spaces. To do so, the occupancy of the parking spaces is detected and balanced by counting the entering and leaving vehicles, the number of free parking spaces is then displayed via LED-sign located beside the motorway. A video camera with pan-tilt-zoom function is used to monitor the occupancy and to visually correct the numbers, if necessary

The system will be integrated into an existing video system, video and TLS data will be forwarded to the traffic management center at Halle/Peißen via fiber optic cable.

Project content

  • 8 camera systems determining the occupancy
  • 1 PTZ-camera (Pan-Tilt-Zoom)
  • 1 outstation
  • 1 LED display

Benefits

With approx. 28,500 parking spaces for heavy goods vehicles at motorway service stations and just under 19,000 spaces at off-motorway rest areas, there already is a known deficit of nearly 15,000 parking spaces The accident statistics show that this often has fatal consequences. A significant number of accidents on motorways are caused by overtired truck drivers and accidents at service stations due to blocked access roads increase.

Existing parking space for HGV must be managed in such way that it can be efficiently utilized. At the same time, the drivers must be able to plan their compulsory breaks and to find parking space without tedious searching.

Pictures