Mandatory lane change (MLC) is a critical step in formulating global route of an autonomous vehicle on the urban road network. Improper MLC decisions on arterial roads could jeopardise efficiency (travel cost) and reliability (possibility of failed lane change). However, the existing research studies seldom investigate the optimal MLC decision at the planning level to maximise the reliability-based driving efficiency. This research aims at addressing two core strategic decision variables (MLC decision point on the road and maximum waiting time before giving up MLC). A series of simulation experiments for various scenarios are conducted for an arterial road to reveal their relationship. The results indicate that both identified decision variables inherently affect travel time spent on this road and the rate of failed MLCs, and a trade-off exists between arterial travel time and the rate of failed MLCs. Based on the simulation analysis, an analytical lane-level link performance (LLP) function is formulated to assess the impacts of MLC decisions on driving efficiency. The analysis validates that the optimal MLC strategic decision (MLC decision position and maximum waiting time) can be determined by maximising LLP function. It is promising to apply the proposed LLP function in lane-level routing algorithm in the future.
Analysing driving efficiency of mandatory lane change decision for autonomous vehicles
IET Intelligent Transport Systems ; 13 , 3 ; 506-514
2018-10-29
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
urban road network , improper MLC decisions , failed lane change , planning level , analytical lane-level link performance function , simulation experiments , driving efficiency , road traffic , simulation analysis , MLC decision position , MLC decision point , mandatory lane change decision , arterial travel time , autonomous vehicle , lane-level routing algorithm , critical step , core strategic decision variables , optimal MLC strategic decision , optimal MLC decision , reliability-based , failed MLCs , reliability , travel cost , existing research studies , maximum waiting time , traffic engineering computing , arterial road , global route
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