The purpose of this study was to investigate traffic flow characteristics at off-ramp junctions in Iranian expressways. The study was conducted on the traffic behavior in isolated off-ramp vicinity of 6-lane expressways. The database consisted of traffic flow and traffic speed information extracted from videotapes. The relationship between diverging traffic flow in the right lane of expressway ...

Stop and go traffic that leads to oscillate traffic flow frequently is observed on congestion flow. Unexpected reasons such as lane – changing maneuvers, lower speeds of leader vehicle and moving bottleneck cause stop and go traffic and amplifying delay and environment impacts. Stop and go traffic exactly can’t be modeled by traffic models, and also car following models based on kinematic flow ...

one of the most important issues in the plant layout design especially in mass production organizations with high inter-plant logistics is‘material flow and inter-plant traffic analysis and its effects on the production capabilities or pauses in production lines. in this paper the inter-plant traffic analysis issue on the basis of single channel queue model (m/m/1) is analyzed in a carmaker c...

In the course of statistical processing traffic flows characteristics data, check for presence anomalous measurements in sampling should be done at very start processing. If are detected, they excluded from an early stage and not taken into considerations further calculations. Numerous criteria have been developed to detect outliers, their effectiveness depends on sample size. practice, technic...

Motorcycles are one of the main transportation modes in some Asian countries because of their advantages, such as better mobility and lower costs, as compared to automobiles. Most of the current designs of roads, such as speed limit and lane markings, are based on automobile traffic and not entirely suitable for motorcycles. Therefore, there is a need to further investigate the traffic characte...

Knowledge of fundamental traffic flow characteristics and vehicle dynamic behavior are essential for operation of transportation system. The fundamental characteristics of speed and flow have been studied. Time-headway distribution of urban heterogeneous traffic was also studied. An appropriate methodology was adopted to collect and extract headway data. The methodology for choice of best fitti...