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Project sponsored by SEAT enables car to communicate with traffic lights

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A project led by SEAT, in collaboration with the Spanish Traffic Authority, the Barcelona City Council and ETRA successfully connects vehicles with traffic lights and the traffic control centre so drivers can anticipate their upcoming status.

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This project also enables information on motorway incidents to get sent directly to vehicles without the need for information panels, bringing cars and infrastructure together via the cloud using cellular technology with latency times of 300 milliseconds.

The vehicle used in this pilot project is equipped with the necessary technology to connects with its surroundings and receive information uploaded by the Traffic Authority to the cloud, which in turn enables the driver to anticipate what lies ahead in real time.

“In this project, SEAT's new connected cars receive real-time traffic information from the Traffic Authority's central cloud, including information displayed on motorway panels or the traffic light status in cities,” explained Jordi Caus, the Head of Urban Mobility Concepts at SEAT.

One part of the project consists in linking cars with traffic lights.“The traffic light sends a signal to the Traffic Authority's cloud about its current status and when it is going to change. The car receives this information, interprets it and alerts the driver of its upcoming status depending on driving speed. This is useful if it is about to change to red, as drivers can begin to decelerate before reaching the traffic light,” said Jordi.

When a vehicle is approaching a traffic light, an alert appears on the screen showing whether it will be red, green or yellow when it arrives, as the system performs a calculation based on how far away the car is and the speed it is travelling at. One important note for safety is that it only works as long as the vehicle is not exceeding the speed limit. On the contrary, the system will no longer alert the driver.

“The system does not work at higher speeds, which is very important for road safety. It aims to be an auxiliary tool that enables motorists to drive more smoothly,” assured Manuel Valdés, the Head of Mobility and Infrastructures at the Barcelona City Council.

Today there are 2,000 information panels that provide drivers with traffic and weather conditions or information about road work or accidents. With this system, all of this information is displayed directly on the screens of connected vehicles at any point of the road network. According to Jorge, “We can accomplish the same as what we used to do with variable message signs on the motorway, but now directly to the car from any point on the road.”

The more information the drivers have, the fewer situations of risk run. This is the goal of the project, which puts road safety at the centre, together with greater driving efficiency. “We are aiming for a significant reduction in the number of accidents, less vehicle traffic and therefore, a positive effect on the environment”, said Jorge Ordás, Deputy Director of Mobility and Technology at the Spanish Traffic Authority.

In addition, connected cars and users themselves will also be information suppliers. “Anyone with information about what happens on the road can share it so other users will know in advance of any incident when they reach the same point,” explained Jorge. “With this project we're taking a first step to connect cars with overall traffic infrastructure. We've begun with information functions, but with the future autonomous vehicle in mind we'll be able to act directly on the car in situations of risk.”


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Project sponsored by SEAT enables car to communicate with traffic lights
Modified on Thursday 28th November 2019
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