Meng Li

Meng Li
Zhejiang University | ZJU · Institute of Microbiology

About

28
Publications
8,498
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482
Citations
Introduction
Skills and Expertise

Publications

Publications (28)
Article
Full-text available
Existing signal control strategies do not consider pedestrian flows in optimizing signal parameters, which may impose significant delays on pedestrians. This study aims to investigate the rationality and effectiveness of designing signal coordination for pedestrians. A numerical case study in Japan is analyzed. Field survey is conducted to collect...
Article
The chief objective of the PATH2Go multimodal traveler information application is to improve the accessibility and the quality of real-time traveler information and to make transit a known and viable choice for travelers. PATH2Go was developed as part of a field test on the US-101 corridor in the San Francisco Bay Area of California, with the prima...
Article
This article describes the development and implementation of adaptive transit signal priority (TSP) on an actuated dual-ring traffic signal control system. After providing an overview of architecture design of the adaptive TSP system, the article presents an adaptive TSP optimization model that optimizes green splits for three consecutive cycles to...
Conference Paper
This paper describes a cost-effective traffic data collection system which is based on low bandwidth iDEN mobile network. An adaptive flow control protocol over the TCP/IP stack was developed to ensure a "best-effort" style data transmission over the low bandwidth network while the data link status is monitored to avoid unnecessary drop-offs caused...
Article
Full-text available
Automobiles powered by fossil fuels are one of the major contributors to both criteria pollutant and greenhouse gas-in particular, carbon dioxide (CO2)-emissions. Previous studies revealed that unnecessary acceleration and hard braking in response to sudden changes of traffic signals may cause a significant amount of wasted energy and increased emi...
Conference Paper
Full-text available
This paper presents a promising application of Vehicle-Infrastructure Integration, in which arterial travel time are estimated in real-time. In this application, information collected through the V-I communication is utilized in concert with that collected by conventional point-based detectors. Two VII probe data (VPD) models have been developed an...
Conference Paper
Full-text available
Based on the analysis of Vehicle Infrastructure Integration (VII) probe message process and data characteristics, a link travel time estimation algorithm was proposed. A link is divided into a downstream section and an upstream section in the algorithm. For the downstream section travel time estimation, the associated snapshots generated over the s...
Chapter
Full-text available
More than ever, traffic congestion is plaguing our heavily populated metropolitan areas. Transportation professionals have recognized that we cannot build our way out of this ever-increasing congestion. The challenge over the next decade is to get more out of the existing transportation system by improving its productivity. To address this challeng...
Article
Full-text available
Bus rapid transit (BRT) systems with dedicated lanes have shown advantages over traditional bus systems and have attracted more transit riders. However, it is not always possible to build BRT systems with double dedicated lanes because of physical and cost constraints. A BRT system with a single dedicated lane is more practical in such situations....
Article
Full-text available
Motor vehicles are one of the major contributors to greenhouse gas emission inventories. Previous studies have revealed that unnecessary acceleration and hard braking in response to sudden changes of traffic signals cause a significant amount of wasted energy and increased emissions. Altering a driver's behavior can potentially contribute to the re...
Article
Full-text available
The basic concept and implementation of an active priority system of light rail transit (LRT) for highway—rail grade crossings are presented. The proposed priority system consists of four major components: train detectors, train travel and dwell time predictors, priority request generator (PRG), and traffic signal controllers. As the brain of the s...
Article
A critical issue encountered in implementing a transit signal priority system is to ensure that communication between transit vehicles and the traffic centre can be established for transmitting signal priority requests and vehicle arrival time information needed for executing signal priority control at signal-controlled intersections. The available...
Conference Paper
Full-text available
This paper presents the basic concept and implementation of a light rail transit (LRT) active priority system for highway/rail grade crossings. The proposed priority system consists of four major components: train detectors, train travel and dwelling time predictor, priority request generator (PRG), and traffic signal controllers. As the “brain” of...
Article
This paper presents the concept and implementation of an offline offset refiner, which addresses the problem of uncertain (not fixed) starts/ ends of green in the determination of offsets for coordinated actuated signal control. Making use of a large amount of archived signal status data available from real-time signal operations, the refiner may f...
Conference Paper
A critical issue encountered in implementing a transit signal priority system is to ensure that communication between transit vehicles and the traffic centre can be established for transmitting priority request and arrival time information needed for executing signal priority control. The available communication channel bandwidth, however, is not g...
Conference Paper
Full-text available
San Diego Trolley has implemented a passive priority system in the San Diego downtown area since 1990. With the changes in trolley operations as well as traffic conditions in the downtown area, the passive priority system has been observed to have various limitations. In this study, by employing GPS data collection method to obtain trolley operatio...
Article
Transit Signal Priority (TSP) is an important element of Bus Rapid Transit (BRT) that involves coordinated efforts between transit vehicle detection systems, traffic signal control systems, and communication technologies. Successful deployment of TSP requires thorough laboratory evaluation through simulation before field implementation. This paper...
Conference Paper
We develop an algorithm for predicting the arrival time of a transit vehicle at a signalised intersection, with specific application for signal priority control. In order to accurately predict the arrival time, real-time GPS bus location information is made available. We propose an algorithm that uses both realtime and historical vehicle location i...
Article
A theoretical model is presented to quantitatively address the relation between bus detector location and effectiveness of transit signal priority (TSP) systems, supplemented by a sample model application and simulation experiments on a real-world arterial corridor. The simulation results agree very well with results from the theoretical model. The...
Article
Full-text available
Providing better information to the public is an important way to improve the transportation system. There is, however, a gap in the quality of the information of current transportation information systems. Inspired by the ubiquitous wireless communication network, the Con- nected Traveler project at US-101 corridor, San Francisco Bay area, aims at...
Article
Full-text available
This document reports the development and implementation of an integrated Adaptive Transit Signal Priority (ATSP) and Dynamic Passenger Information (DPI) system, and extensive testing with a real-world operation setting on a 10-mile-long ATSP-enabled road segment along El Camino Real, between 42nd Avenue in San Mateo and Bayhill Road in San Bruno,...

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