01697749

Component

In this study, the authors evaluate the effects of considering passenger occupancy dynamics for a bi-modal perimeter control. The objective is to examine under which circumstances it becomes important to account for them when designing a bi-modal perimeter control model. In addition, the authors investigate if the same (or close enough) network performance can be achieved with a bi-modal perimeter control that does not account for the bus passenger dynamics (i.e. based on exogenous bus occupancy). This is important, because incorporating passenger dynamics requires a vast knowledge of the system, a higher number of parameters, and a higher computational cost. The authors propose a Model Predictive Control approach that accounts for the constraints related to the evolution of bus passengers (approach 1) and compare it to the one that uses an exogenous bus occupancy (approach 2). The results show that approach 1 gives the best performance overall as it explicitly accounts for the dynamics of bus passengers. On the other hand, depending on the used exogenous bus occupancy, the performance of approach 2 can vary up to 11\%. Finally, the authors show that there exists a threshold value for the exogenous bus occupancy such that, when it is incorporated in approach 2, it can lead to the optimal solution as if a more complex and computationally more demanding optimization framework (approach 1) was used.

This paper was sponsored by TRB committee AHB45 Standing Committee on Traffic Flow Theory and Characteristics.

19-05589

English

7p

2019

Transportation Research Board 98th Annual Meeting

Digital/other

Figures; References (25)

Bus transit; Bus transit operations; Occupant dynamics; Optimization; Passengers

Operations and Traffic Management; Public Transportation; Safety and Human Factors; Vehicles and Equipment

Transportation Research Board Annual Meeting 2019 Paper #19-05589

TRIS, TRB, ATRI

Dec 7 2018 9:36AM