Within the project INTERSAFE-2 an intersection safety system is developed. These systems will be tested in real traffic environment. A dedicated intersection in Wolfsburg/ Germany is dedicated for these test purposes.

The test site is an intersection of two roads in downtown area of Wolfsburg, namely Laagbergstraße/ Breslauer Straße in the one direction and Stadtwaldstraße/ Wohltbergstraße in the other direction. The topology is depicted in the following figure.

The traffic is controlled by a traffic light. In case of non-operation of traffic light traffic signs are there to specify the right of way.

Each road has multiple lanes. They are dedicated for specific turning directions. Lane markings indicate the lanes and arrows show the turning rules on the individual lanes. The two driveable directions in each road are separated by traffic refuges. Each lane has its own stop line. Some of the lanes are equipped with induction loops some metres in front of the stop line.

All four roads are equipped with cycle paths and paths for pedestrians on the pavement. Both, crossings of cycle paths and pedestrian paths are marked by interrupted lane markings on the asphalt and also safeguarded by individual traffic lights. Cyclists and pedestrians who have the intension to cross the road find a request button on each traffic light pole.

Equipment of the test site Germany

The standard equipment of the traffic light safeguarded intersection is added by components for INTESAFE-2 project. A highlight of INTERSAFE-2 is the communication capability between intersection site and vehicle.

The intersection site aggregates relevant data about

 A dedicated server located in the traffic controller electrical cabinet fuses all the data from the mentioned sources. The fused information is provided by broadcast by communication to all traffic participants in the neighbourhood of the intersection.

 This communication link can be performed by different technologies. In this case communication by WLAN (brand-new standard for automotive applications IEEE802.11p) is investigated. In Figure 5 a MESH-node with its communication antennae is depicted on a traffic light pole.

Status of test site Germany