Network traffic simulation

About: Network traffic simulation is a research topic. Over the lifetime, 4535 publications have been published within this topic receiving 74606 citations.

Highway Maintenance Scheduling Using Genetic Algorithm with Microscopic Traffic Simulation

Abstract: This paper introduces a hybrid genetic algorithm-microscopic traffic simulation methodology forscheduling of pavement maintenance activities involving lane closures aiming to minimize network traffic delay.Genetic algorithm is implemented as an optimization tool for the generation and selection of maintenance schedules.For each possible schedule, a microscopic traffic simulation model is used to simulate traffic operations in thenetwork to estimate the delay caused by the lane closures. This concept has been implemented with the geneticalgorithm written in the C language and simulation carried out by PARAMICS. The hybrid model has been testedwith an example problem that requires the scheduling of three maintenance crews to 10 links within a 24-hourperiod, in a network comprises 160 links. It recommended a schedule that has avoided peak periods of traffic flow.The example problem has demonstrated the applicability of this hybrid met hodology in pavement maintenancescheduling.

On an autonomous cruising traffic flow simulator including inter-vehicle and road-to-vehicle communication networks

Abstract: This paper describes an autonomous traffic flow simulator including inter-vehicle and road-to-vehicle communications. First, autonomously running vehicles traffic flow is modeled in detail, and the modeling of the assumed driving assistance system, inter-vehicle communications and road-to-vehicle communications is carried out. Next, based on such modeling, a microscopic traffic flow simulator is constructed, and performance evaluation methods are mentioned. Finally, as examples of performance evaluations, effects of shadowing in inter-vehicle communications and road-to-vehicle communications are examined.

What Do Different Traffic Flow Models Mean for System-Optimal Dynamic Traffic Assignment in a Many-to-One Network?

Abstract: A variety of macroscopic traffic flow models have been applied to formulate the link-based system optimal dynamic traffic assignment (SO-DTA) problem in a many-to-one network. It is expected that SO-DTA models based on various traffic flow models usually result in different optimal link traffic evolution patterns, but whether and how traffic flow models affect the minimal system cost and the corresponding optimal arrival pattern at the destination is unclear. Three traffic flow models—point-queue, spatial-queue, and cell-transmission—are examined, and their resulted minimal system cost in many-to-one networks is compared. It is proved that for three simple networks—a linear network with two sequential bottlenecks, a two-in-one-out merge network, and a one-in-two-out diverge network—the minimal system costs for the SO-DTA models based on these three traffic flow models are identical. Numerical experiments show that this property appears to be held for general many-to-one networks. The reason may be that al...

Vehicle-to-Vehicle Channel Simulation in a Network Simulator

Abstract: Recent developments in vehicle-to-vehicle (V2V) communication has increased the need for simulation to test and analyze protocols for this emerging technology. Packet level network simulators lack a realistic V2V channel module that would allow having accurate simulations. An efficient method for generating a V2V channel in a packet level network simulator is discussed. This method, based on V2V channel measurements and models, efficiently generates Nakagami fading whose power spectrum and fading severity change with vehicles’ velocities and separation. The small-scale fading envelop is used to modulate a large-scale path loss model. The implementation uses a simple pre-computed lookup table to generate the power envelop with minimal calculations in the simulator.

Analysis of topological characteristics in air traffic situation networks

Abstract: In the face of growing demand for air traffic, there is a clear need to measure how difficult a given air traffic situation looks. Currently, the concept of air traffic complexity is usually used t...