The innovative camera system recognises pedestrians’ intention to cross the road and changes automatically to green. This reduces unpleasant waiting times and allows better flow of motorised urban traffic.
In Vienna there are some 200 push-button pedestrian lights (signalised pedestrian crossings). They allow pedestrians to cross the road safely. But only after a waiting time, which is annoying for many people. This often results in pedestrians not waiting for the green phase, but instead walking in a different direction or crossing the street when the lights are red. For some people, push-button lights are an invitation to trigger off the green phase as they go past – just for fun. Something that annoys car drivers, who have to stop at the crossing even though nobody is crossing the road.
More convenience – less waiting time
In a project commissioned by Municipal Department 33 of the City of Vienna – responsible for urban lighting, traffic lights, clocks and public WiFi nodes – researchers at TU Graz’s Institute of Computer Graphics and Vision have developed a new pedestrian traffic light system in the last three years which is more convenient and meant to replace the push-button system. The innovative camera-based system recognises the intention of pedestrians to cross the road and switches to green automatically. What’s more, it optimises the traffic flow further, as Horst Possegger from the Institute of Computer Graphics and Vision explains by way of two examples: “The green phase can be extended in the case of large groups of persons, who require more time to cross the road. And if persons leave the waiting area before the lights have turned to green, this is also passed on to the lights. The traffic lights subsequently don’t switch to green and there are no unnecessary waiting times for motorised traffic.”
Camera tracking as basis
The main feature is a camera mounted on each pedestrian traffic light. Whereas standard industrial solutions only cover a visual field of two by three metres, this system perceives persons within a field of eight by five metres. It recognises whoever wants to cross the street in seconds. “It requires one second to estimate the intention – after two seconds the estimation becomes reliable,” explains Possegger. Subsequently, the system signals the wish to cross the road on behalf of one or more persons to the pedestrian light controller. The latter decides when the lights should change – just like a traditional push-button system. “Using the current configurations, our system signals that wish to cross three to four seconds before the button is pushed,” says Possegger.
Horst Possegger knows that this all sounds very simple, but “two years of intensive research were necessary due to the complexity of requirements.” The hardware had to be big enough for a powerful local computer, but at the same time small enough to fit into the switch box of the traffic lights. Exactness and efficiency was a primary goal of the software. Moreover, the traffic light was also equipped with a monitoring system which can report faults immediately. “This is a double safeguard. The system was developed in such a way that it can work round-the-clock even in a harsh environment and can also deal with voltage fluctuations,” explains Possegger.
Using global movement models and recorded data, the research team developed learning algorithms which recognise pedestrians’ intention to cross the street.
Possegger dispels any worries about data protection. Although the image data are absolutely necessary to detect pedestrians – including children and persons with umbrellas or buggies, the images are only analysed locally and do not leave the camera. The pedestrian traffic light system works exclusively with geometric information from which it derives a possible wish to cross.
Implementation by the end of 2020
The knowledge transfer is currently being carried out from the researchers to Günther Pichler GmbH. The company is responsible for the installation in the Vienna city area and will replace push-button lights with the new camera system at selected locations by the end of 2020 for evaluation purposes.
The Latest on: Intelligent pedestrian traffic lights
via Google News
The Latest on: Intelligent pedestrian traffic lights
- ‘Power of Two’ integrates intelligent security with faster traffic flow in high riseson October 6, 2019 at 9:21 am
A new global partnership between Royal Boon Edam and Schindler brings together their respective strengths to provide secure access into buildings and streamlined pedestrian traffic flows through lifts ...
- Intelligent crosswalk lights are hitting the streets in 2020on June 7, 2019 at 2:31 pm
A new camera system developed by TU Graz allows these intelligent traffic lights to automatically predict pedestrian crossing intentions. The Vienna authorities are conscious of ending waiting for ...
- Future pedestrian intersections could predict when you'll crosson May 31, 2019 at 11:04 pm
Researchers at TU Graz’s Institute of Computer Graphics and Vision claim to have hit upon an “intelligent pedestrian traffic light” system that uses cameras to identify when people are ready and ...
- Beware of intelligent digital zebra crossings on Nairobi roadson May 29, 2019 at 7:38 am
(Photo Samson Wire) NAIROBI, KENYA: Nairobi County has now introduced intelligent digital zebra crossings aimed at reducing pedestrian deaths caused ... either side of the road and connected to the ...
- Intelligent pedestrian crossing system banishes the buttonon May 27, 2019 at 11:24 pm
This helps to optimize traffic flow ... stuck at a red light even though no one is crossing the street. The setup is actually pretty simple. Atop the light on each side of the street is a camera that ...
- RTA launches pilot project for intelligent pedestrians & cycling lighting and visits Philips lighting in Franceon October 28, 2018 at 2:55 am
The Project aims to identify the benefits of implementing the Intelligent ... CEO of Traffic and Roads Agency, said, “The system uses specialised sensors that monitor the traffic movement on the road ...
- INTELLIGENT TRAFFIC LIGHTS TO PROTECT PEDESTRIANSon December 8, 2017 at 7:17 pm
Researchers in Belgium have answered the call by coming up with traffic lights that literally watch out for pedestrians. The lights With the traffic volume in the European Union expected to double ...
- SCOOT: The Traffic Lights That Count Pedestrianson September 17, 2014 at 3:43 pm
Pedestrians that press the button on a set of lights and then change their ... that brings back the function of the human traffic cop is the Holy Grail for Transport for London. "We're trying to be ...
- London to trial "intelligent" pedestrian crossingson March 10, 2014 at 5:00 pm
Ever walk halfway across a road only to have the light change and force you to make an undignified ... announcing upcoming trials of an "intelligent" pedestrian crossing. Called the Pedestrian Split ...
- Queensland trials intelligent traffic lightson October 24, 2012 at 12:00 am
The Emergency Vehicle Priority (EVP) system has been designed to give the state's fire and ambulance vehicles a clear run of green lights on route to an emergency via an intelligent ... by the traffic ...
via Bing News