Network macroscopic fundamental diagrams (NMFD) and related network-level traffic
dynamics models have received both theoretical support and empirical validation with the …

Traffic in an urban network becomes congested once there is a critical number of vehicles in
the network. To improve traffic operations, develop new congestion mitigation strategies …

This study proposes a novel flexible bus dispatching system in which a fleet of fully
automated modular bus units, together with conventional buses, serves the passenger …

The stochastic nature of public transport systems leads to headway variability and bus
bunching, causing both operator and passenger cost to increase significantly. Traditional …

Traffic state imputation refers to the estimation of missing values of traffic variables, such as
flow rate and traffic density, using available data. It furnishes comprehensive traffic context …

Unimodal, concave relationships between average network productivity and accumulation
or density aggregated across spatially compact regions of urban networks—so called …

Vehicle emissions are a major contributor of air pollution in urban areas, with severe
consequences for public health and the environment. This paper focuses on analyzing …

Bimodal urban networks are complex systems operating within multiple constraints. This
paper develops an integrated and systematic framework for the optimization of bimodal …

Bus bunching has been a persistent issue in urban bus system since it first appeared, and it
remains a challenge not fully resolved. This phenomenon may reduce the operational …

Increasing mobility and urbanization is important for economic prosperity but leads to higher
urban traffic congestion, which is associated with many negative externalities. Therefore …