Earlier works with a focus on intersection management were introduced by Dresner [4]: Tiles are created from the intersection region, which can be requested by vehicles approaching the intersection. A centralized intersection manager proceeds to assign tiles with multiple requests to vehicles, using a...
vehicles in the entry lane approaching the roundabout will be made to form clusters based on traffic flow volume, and in the lower level, the vehicles’ optimal sequences and roundabout merging times are calculated by solving a combinatorial optimization problem using a receding horizon control (RHC...
For AVs crossing the roundabout, the following performances are defined: Safety criteria: automated vehicles may be in an accident-prone situation when approaching the roundabout. Accordingly, the purpose of the roundabout controller is to ensure that incoming AVs enter the roundabout simultaneously, so...
Roundabout driving can be challenging for both manual and AVs. Cuenca et al. [86] presented a method based on the Q-learning algorithm to train an AV agent how to safely navigate on roundabouts. The CARLA simulator is used to implement the suggested learning algorithm. The algorithm is traine...
The motion of a vehicle is described through a modified NaSch model, based on the extensions proposed in References [8,21,31], that captures the deceleration effects of a vehicle approaching a raised crosswalk. Thereby, the motion of a vehicle is described by the following four rules: 1. Ac...
In Figure 1, it illustrated a flower roundabout model layout in which left approaching vehicles’ priority was assigned. The need of priority rules was due to right of way settings and collision possibilities decreasing among cornering vehicles. In relation to conflict schemes of entries, the flow...
Furthermore, a reduction in excessive queue lengths was estimated and capacities and queue lengths were calculated by legs. It was found that these are highly influenced by the distribution of flows among legs, and the share of flows in various directions. Keywords: roundabout capacity; autonomous...
This study examines the use of Unmanned Aerial Vehicles (UAVs) in transportation, focusing on traffic monitoring and accident prevention. UAVs provide a cost-effective means for traffic surveillance, route planning, and accident analysis, enhancing data accuracy and timeliness. The paper discusses autono...
The roundabout intersection typically consists of a circular area in the middle and several inlet/outlet branches on the sides, which enables the vehicles to rotate around until finding the suitable exit branch without a need for traffic light signals, such as in the cross junction, where the ...
During the experiments, three scenarios were tested at an intersection: the approaching vehicle stops in time, stops late, or does not stop at all. In the latter case, the UAV’s warning prevented the EGV from a potential collision. The maximum speed of the DJI M600 was 20–25 km/h [...