A new study finds that 'connected' vehicles, which share data with each other wirelessly, significantly improve travel time through intersections -- but automated vehicles can actually slow down travel time through intersections if they are not connected to each other. The culprit? Safety.
A new study finds that"connected" vehicles, which share data with each other wirelessly, significantly improve travel time through intersections -- but automated vehicles can actually slow down travel time through intersections if they are not connected to each other. The culprit? Safety.
"There is a lot of research showing that automated vehicles can improve safety. But our research here -- which relies on computational modeling -- suggests that if we want to also improve travel time, an increase in automated vehicles isn't enough; we need vehicles that are capable of communicating with each other and with the traffic-control systems that manage traffic flow at intersections.
"Because of their programming, AVs are assumed to move more cautiously compared to human drivers," Hajbabaie says."Their safety stems, in part, from their being programmed to drive conservatively. CVs and CAVs are designed to receive information about the future state of traffic lights and adjust their speeds to avoid stopping at intersections. As a result, the movement of CVs and CAVs is expected to be smoother -- and have a lower number of stops -- than HVs and AVs.
One clear takeaway was that the higher the percentage of CVs and CAVs, the greater the intersection capacity. In other words, when more vehicles on the road were connected, more vehicles could flow through the intersection more quickly. Higher capacity also means that, on average, you have fewer vehicles sitting in line at a red light."However, we found that higher percentages of AVs -- which are not connected -- actually slows travel times through intersections," Hajbabaie says.
France Dernières Nouvelles, France Actualités
Similar News:Vous pouvez également lire des articles d'actualité similaires à celui-ci que nous avons collectés auprès d'autres sources d'information.
Infant formula safety checks can be improved with stratified sampling -- ScienceDailyProducers of infant formula employ comprehensive food safety systems, including product testing to ensure those systems are working. A new study finds that some testing methods are more powerful at catching contaminants than others.
Lire la suite »
Human Quirks News -- ScienceDailyQuirky stories from ScienceDaily's Health & Medicine, Mind & Brain, and Living Well sections.
Lire la suite »
Bizarre Things News -- ScienceDailyQuirky stories from ScienceDaily's Space & Time, Matter & Energy, and Computers & Math sections.
Lire la suite »
Should You Pursue Self-Esteem or Self-Compassion?A newly published review can help readers to answer that question.
Lire la suite »
Computer Modeling News -- ScienceDailyComputer modeling in engineering, weather modeling, climate modeling, medical modeling and work-related computer simulations. Read the latest research using computer models here.
Lire la suite »
Endangered Plants News -- ScienceDailyEndangered plant research. Read about interesting mechanisms for plant survival and what is being done to save threatened and endangered plants.
Lire la suite »