Application of Intelligent Pedestrian Traffic Signal (IPTS) in Alcalá de Henares

The Intelligent Pedestrian Traffic Sign (IPTS) system will be implemented in the municipality of Alcalá de Henares, Spain at the intersection shown below from December 2014 until September 2015.

The Spanish pilot in Alcalá de Henares, implemented by SICE, includes two use cases:

  • Intelligent Pedestrian Traffic Signal System with I2VRU (Infrastructure to VRU);
  • Intelligent Pedestrian Traffic Signal System with I2V (Infrastructure to vehicle);

The Intelligent Pedestrian Traffic Signal System (IPTS) consists of an intelligent pedestrian application based on I2VRU communications, where pedestrians, detected via Bluetooth, can activate green light demand for crossing an intersection via an app on their smart phone and in response to this, the traffic light controller (TLC) provides them information. At the same time it extends pedestrian green phase to ensure a safety crossing for people with reduced mobility.

For the second case, the scenario focuses on preventing collisions between right-turning cars with low/no visibility and pedestrians. The RSS (Road Side Sensor system, as a part of the Traffic Light Controller) detects the pedestrian using camera and warns the driver of the car about the presence of pedestrians crossing. When this TLC detects the pedestrian crossing by RSS (Camera) alerts car approaching intersection on pedestrian crossing with V2I and I2V communication.

Pilots Objectives

The goal pursued with the trial is the implementation of the designed IPTS system with I2VRU +I2V communication, whose main objectives are:

  • Increasing safety and comfort for pedestrians that require more than average time to cross the road, by the following means:
    • Allowing pedestrians to activate a demand for green light;
    • Providing information to the VRU about active status on pedestrian green phase (via mobile App);
    • Extending time on pedestrian green phase for safety crossing.
  • Preventing collisions between right-turning vehicles with low/no visibility and crossing VRUs by:
    • Detecting the pedestrian crossing and warning the driver of the existing pedestrian crossing.
  • Providing signal phase and timing information to the vehicle ITS Station.
Expected Results

From this trial, the project aims at reach the following outcomes:

  • A reduction in the number of pedestrian offenses (red crossing);
  • A reduction in the number of collisions;
  • An improvement of the perceived safety of pedestrians with mobility reduced;
  • An improvement of mobility and the feeling of comfort of pedestrians that require more than average time to cross the road.
Intelligent Pedestrian Traffic Signal System (IPTS) poster