A crossroads for intersections
Sick of waiting at traffic lights? The semi-autonomous driving aids being fitted to many new cars could consign the red light to history, A*STAR researchers report. According to their modeling, a system in which each car crosses the intersection in its own virtual bubble of safe space, modulating its speed using adaptive cruise control, will result in smooth traffic flow in each direction.
In the city of the near future, traffic lights would be complemented by and then replaced with a communication beacon, explains Bo Yang from the A*STAR Institute of High Performance Computing, who led the work. The beacon gathers and transmits data about the distance and approach speed of vehicles nearing the intersection, which each car feeds into an algorithm that plots a safe course through without having to stop.
At the algorithm’s heart is the concept of “adaptive repulsive force”. The closer two cars’ trajectory would bring them at an intersection, the stronger their repulsion and the greater the speed adjustment they make to pass each other safely.
Yang set out to reduce barriers to adoption of this system. “One of our most interesting findings is that the rules governing the necessary repulsion between vehicles is rather simple,” he says. The result is a system that does not require much computing power at the beacon or in the vehicle itself.
Cars need not be fully self-driving, but rather simply able to brake and accelerate autonomously – which cars fitted with smart cruise control can already do. The driver gives up control of the car’s speed through the intersection but remains in charge of steering.
In Yang’s simulations, the algorithm worked effectively even for relatively complex intersections. “In most cases, pre-emptive deceleration only slightly lowered the vehicle velocity, resulting in safe passage of each vehicle across the intersection without coming to a full stop at any point,” Yang says.
The system’s other advantage is that it could be phased in gradually. Initially, traffic lights would still be needed to help older cars pass through the intersection. As smarter cars become prevalent, the lights can switch off for more and more of the time until they are no longer needed at all. “Our simple algorithm only requires basic vehicle intelligence, but is also fully compatible with more intelligent vehicles that may come in the future,” Yang adds.
Learn more: A crossroads for intersections
The Latest on: Smart intersections
- Honda's smart intersection tells drivers what's around the corner on October 6, 2018 at 8:00 am
As the Honda Pilot is about to enter the intersection a specially built HUD (heads-up display) flashes an orangish yellow with an image of an ambulance. Seconds later an actual ambulance that, moments ... […]
- Honda Demonstrates 'Smart Intersection' Technology in Ohio on October 6, 2018 at 5:47 am
MARYSVILLE, Ohio (AP) — Honda and a central Ohio city have teamed up to display "smart intersection" technology designed to make pedestrians and motorists safer by sending audio and visual warnings ab... […]
- Honda Unveils World’s First Smart Intersection on October 5, 2018 at 7:15 pm
Honda has installed cameras atop four stoplight posts at the corner of Main Street and Fifth Avenue in Marysville, Ohio, as part of a $2 million pilot program that will advance development of automate... […]
- Honda unveils ‘smart’ intersection on October 5, 2018 at 5:53 pm
MARYSVILLE — Honda unveiled its newest technology Thursday by driving passengers in two Pilot SUVs through downtown Marysville. Journalists, government officials including Gov. John Kasich, and indust... […]
- Honda, VW are hard at work making intersections smarter on October 5, 2018 at 11:55 am
Crashes at intersections account for roughly 20 percent of all traffic-related deaths each year, which is why both automakers and suppliers are determined to create smart intersections that use cuttin... […]
- Honda testing ‘smart intersection’ technology to see around buildings on October 5, 2018 at 10:18 am
Honda is showing off a pilot project that uses vehicle-to-everything communications to boost safety around intersections by helping connected vehicles "see" approaching vehicles or pedestrians that ar... […]
- Honda demonstrates new “Smart Intersection” technology that enables vehicles to virtually see through and around buildings on October 5, 2018 at 4:56 am
Honda partners with City of Marysville, Ohio in real-world environment Roughly 20% of the nearly 35,000 traffic deaths that occur each year in the U.S. occur at intersections Honda today held a demons... […]
- Honda demonstrates 'smart' intersection that warns drivers of jaywalkers, red light runners on October 5, 2018 at 4:31 am
Honda Motor Co. has fitted a downtown Marysville intersection with cameras, computers and artificial intelligence that can warn equipped vehicles of a jaywalker out of sight around a corner or a speed... […]
- Honda’s new smart intersection technology aims to cut crashes on October 5, 2018 at 3:25 am
Honda showed off its latest “smart intersection” technology Thursday morning, part of the company’s long-term plan to evaluate how its vehicles can connect within a city environment to prevent serious ... […]
- Honda demonstrates "Smart Intersection" technology in Marysville on October 4, 2018 at 10:20 pm
A pedestrian crosses the street. A driver runs a red light. An emergency vehicle rapidly approaches. All these potentially dangerous scenarios would be made much safer under a system unveiled Thursday ... […]
via Google News and Bing News