A b s w 6 In USA, trailic simulation was originally developed to evaluate the traffic signal control system in the 1970s by the Federal Highway Administration (FHWA). This paper fin1 introduces the traflic signal control system software development process developed a t Traffic Research Laboratory, in which trailic simulation is integrated to develop, debug, test and evaluate traflic signal con...

As a new attempt to solve hyperbolic conservation laws with spatially varying fluxes, the weighted essentially non-oscillatory (WENO) method is applied to solve a multi-class traffic flow model for an inhomogeneous highway. The numerical scheme is based upon a modified equivalent system that is written in a “standard” hyperbolic conservation form. Numerical examples, which include the difficult...

Congestion on highways is becoming a bigger problem every day. With the increasing need for more highway capacity, which cannot always be met by building new highways, opportunities must be found in state-of-the-art technologies for more efficient traffic management. In this thesis traffic control is studied where the traffic consists solely out of intelligent vehicles arranged in platoons, i.e...

Highway traffic is both a social phenomenon and a source of data for understanding the dynamics of systems made up of many individuals following their own behavioral rules. We present computer simulation results that point to the existence of a new and general phenomenon in mixed highway traffic under moderate density conditions. As the number of diverse vehicles in the road increases, there is...

Accurate real-time crash risk evaluation is essential for making prevention strategy in order to proactively improve traffic safety. Quite a number of models have been developed to evaluate traffic crash risk, by using real-time surveillance data. In this paper, the basic idea of traffic safety region is introduced into highway crash risk evaluation. Traffic safety region aims to describe the s...

We study the traffic characteristics on a single-lane highway with a slowdown section using the deterministic cellular automaton (CA) model. Based on the theoretical analysis, the relationships among local mean densities, velocities, traffic fluxes, and global densities are derived. The results show that two critical densities exist in the evolutionary process of traffic state, and they are sig...

Due to its large size, this document has been segmented into multiple files. All files separate from this main document file are accessible from links (blue type) in the table of contents or the body of the document. Executive Summary Introduction One of the most compelling reasons for investment in Intelligent Transportation System (ITS) services is to realize a reduction in traffic congestion...

The number of Unmanned Aerial Vehicles (UAVs) continues to explode. Within the total spectrum Aircraft System (UAS) operations, Urban Air Mobility (UAM) is also on way. Dense air traffic getting ever closer us. Current research either focuses network design and route for safety purpose or swarm control in open airspace contain large volume UAVs. In order achieve a tradeoff between volumes UAVs,...