RMAC: Customised MAC Protocol for Roundabout Management Using VANET for Coperative Driving

Roundabout Traffic Control Management System

The pioneering work in field of smoothning traffic flow was done by Yang and Li (2003) proposing of traffic control at Roundabout utilising signal with variable signal timing. Then G Tan, and Wang et al. (2011) further put forward the idea of Optimal Number of Vehicles in Roundabout (ONVR), calculated and optimised it. J Zhang et al (2012) used Artificial Intelligence with Fuzzy Logic wherein outer layer selected most urgent phase subset and while inner layer calculated current phase’s extension time of Redlight signalling controller. Reza Azimi et al. (2013) proposed CDAR (Collision Detection Algorithm for Roundabout) algorithm. Their algorithm checked whether there is any possibility of any collision of vehicles trajectories. They divided the entire intersection area in small cells for purpose of checking impending vehicles future location.

L C Bento (2012) implimented an ITMS in Time-Space region with Reservation Algorithm. They proposed layers of space in 3-Dimensions each representing time instance ‘ t ’. X Sun et al (2016) presented a comprehensive comparison of Capacity of different kind of traffic intersection including Intersection. More recently J Wu et al (2014) has emphasised on control mechanisms which can balance between safety and efficiency issues. They have proposed a sequence-based system for CIM (Cooperative Intersection Management). Coi et al (2018) has given emphasis on Reservation Based Cooperative traffic management of Multi-Lane roads with different traffic mixes. Altogether new approach was tried by Vasirani(2018) and Q Lu (2016). Finally Lei Chen (2016) has summed up various types of Cooperative intersection Management System in their survey paper. He has considered both signalised and non-signalised intersection which included four-way intersection with straight traffic, roundabout as well as four-way intersection with left, right turn along with straight traffic.