The most appropriate service measure for a two-lane highway is the combination of average travel speed (ATS) and percent time spent following (PTSF). local driver behavior traffic operation characteristics in different countries affect operational analysis results. objective this study to evaluate applicability HCM procedures on highways Iraq. Ten segments northern Iraq were selected, more than...

Bothheavy goods vehicles (HGV) and exiting vehicles can significantly affect the entry capacity of a roundabout. However, their effects have not been taken into account in HCM 2000 model.Recently two studies have been carried out to address this issue: 1) Dahl and Lee (2012) proposed an expectation theory based approachto incorporate the effect of HGVs [1]; and2)Qu et al. (2013) deriveda new ro...

A new algorithm is developed for sampling transition paths and computing reaction rates. To illustrate the use of this method, we study a two-dimensional system that has two reaction pathways: one pathway is straight with a relatively high barrier and the other is roundabout with a lower barrier. The transition rate and the ratio between the numbers of the straight and roundabout transition pat...

Sag sections are freeway where the gradient varies significantly from top to bottom. Due their special geometric characteristics, sag often bottlenecks in motorway networks. However, we still unclear about underlying mechanisms of traffic congestion two-lane sections. Based on actual lane change experience, a lattice flow model at considering empirical rate is proposed. The developed reveal evo...

Lane 1. control jejunal extract; lane 2, A; lane 3, precursor; lane 4. HLe(a-b-); lane 5, Led; lane 6, lacto-N-tetraose; lane 7, lacto-N-fucopentaose I; lane 8,lacto-N-fucopentaose 11; lane 9, lacto-N-difucohexaose I; lane 10, lacto-N-difucohexaose 11; lane I I , lacto-difucotetraose; lane 12. lacto-N-neotetraose; lane 13. 2-fucosyl-lactose; lane 14, 3-fucosyl-lactose. Lanes 2-5 contain ovarian...

Several ITS-based countermeasures are currently being deployed in workzones to enhance both the safety and the mobility of drivers. One of the functions of interest deals with lane management identified in previous studies as dynamic lane merging. The dynamic lane merging, can take two forms; dynamic early merge and dynamic late merge. Previously suggested dynamic lane merging techniques may be...

Modern roundabouts have become very popular in North America over the last decade. This popularity can be attributed to their great success in Europe and Australia. The prevalence of roundabouts has generated significant debate over their accessibility for pedestrians. With almost uninterrupted traffic flows, it is difficult for the visually impaired to determine safe gaps relying on auditory c...