01555502

Component

Pedestrian simulations are essential tools in planning aimed at ensuring a smooth flow of pedestrians, e.g., evacuation scenarios and transportation infrastructure. One of the most challenging problems in describing the pedestrian behavior is the pedestrians’ route choice. The allocation of travelers to available routes is called assignment if a user equilibrium is reached, i.e., no traveler can shorten his travel time by choosing a different route. In a simulation the pedestrians are allocated to the different routes by defining route choice proportions (RCPs). The RCP of a certain route is the probability that a pedestrian chooses this route. In common simulation software the RCPs have to be defined in advance of the simulation run. To represent reality, i.e., to reach a user equilibrium, the simulation run has to be repeated with adjusted RCPs, which is very costly in terms of time. This article presents a newly developed algorithm which adjusts the RCPs during the simulation. Thus, it is possible to find a user equilibrium within only one simulation. Such an algorithm is called one shot assignment. It is assumed that pedestrians minimize their travel time. The presented algorithm works without explicitly knowing the capacity or the length of the routes. To verify the new algorithm, it is tested with various pedestrian simulation scenarios. Comparisons of the mean travel times show its superiority to alternative algorithms of assignment.

This paper was sponsored by TRB committee ANF10 Pedestrians.

01550057

15-2094

English

13p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; References; Tables

Algorithms; Pedestrian flow; Pedestrians; Route choice; Simulation; Traffic assignment; Travel time

User equilibrium

Pedestrians and Bicyclists; Planning and Forecasting; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2015 Paper #15-2094

TRIS, TRB, ATRI

Dec 30 2014 12:45PM