Effect of Heavy Transport Vehicles on Speed-Flow Characteristics of Mixed Traffic on Multi Lane Divided Intercity Highways

Singh, Sandeep; Panda, Rajendran; Saw, Dinesh Kumar; Selvaraj, Moses Santhakumar

doi:10.1061/9780784482902.021

Cited by 12 publications

(3 citation statements)

References 7 publications

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“…This is in line with a past study by Lu, et al (2020) that concluded HVs use more road space than LVs and MCs and have a greater effect on traffic flow. Similarly, a past study [7] found that the impedance caused by different HVs to other vehicles in mixed traffic flows affects the overall road capacity and LoS. The increase in road capacity due to the decrease in HVs at the cumulative probability of 85% and 50% in Table 5 shows a constant value.…”

Section: Road Capacity Distributionmentioning

confidence: 62%

“…HVs occupy more space on the road than passenger cars and have a greater impact on oncoming traffic [6]. The impedance that different types of his HVs pose to other vehicles in mixed traffic affects the overall capacity and level of service (LoS) of highways [7]. Furthermore, estimation of lane capacity in mixed traffic and lack of lane discipline by drivers create varying levels of difficulty [8].…”

Section: Introductionmentioning

confidence: 99%

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Applying Two-parameter Weibull Distribution to Model Stochastic Capacity of Arterial Roads During Peak Hours due to Changing Proportion of Heavy Vehicles

Wedagama¹,

Suweda²

2023

cea

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Despite the increasing number of heavy vehicles (HVs) on the road, little attention is paid to the impact of HVs on traffic flow. Due to their different physical characteristics (length and size) and operational characteristics (acceleration and deceleration) compared to other vehicles, HVs have a physical and psychological impact on the traffic around them. On the other hand, many studies done on changes in road capacity yield a single value of road capacity. In this study, however, the road capacity is analyzed with probability distributions. This study found that the road capacity increases since HV reduction has a constant value with 85% and 50% cumulative probabilities. On major roads, reducing HV by 10%, 20%, 30% increases road capacity by 3-4%, 8% and 11-12% respectively. Lower HVs ratios are less likely to reduce road capacity. However, the speed of HV and other modes does not directly affect the cumulative probabilities. In addition, as the ratio of HV increases, the speed difference between vehicle types decreases. This study is limited to rush hour traffic flows so that a further study can consider the total duration of mixed traffic conditions.

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Section: Road Capacity Distributionmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Applying Two-parameter Weibull Distribution to Model Stochastic Capacity of Arterial Roads During Peak Hours due to Changing Proportion of Heavy Vehicles

Wedagama¹,

Suweda²

2023

cea

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show abstract

“…They established a negative logarithmic linear relationship between average speed and large-vehicle mixing rates. Singh et al (2020) assessed the effect of Heavy Transport Vehicles (HTVs) on speed-flow characteristics of Indian highway traffic. They found that the HTVs operation impacted the traffic speed and flow.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mixed Traffic Platooning by Commercial Vehicle Types on Traffic Flow Characteristics of Highways

Singh

Rajesh

Santhakumar

2022

Period. Polytech. Transp. Eng.

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The existence of different types of Commercial Vehicles (CVs) in the shared roadway affects traffic flow characteristics differently from other vehicles. Owing to the uncertain placement and movement of these CVs in both longitudinal and lateral directions, the opportunities for lane changing and overtaking by other vehicles with lower maneuverability decrease, resulting in the formation of platoons. The study's primary aim is to assess the effect of mixed traffic platoons formed by three different classes of CVs on highway traffic speed, flow, and density under two different traffic regimes (regimes A and B). In this study, regime A represents the non-platooning condition, and regime B represents the platooning condition. Bi-directional traffic data was collected from the highway sections in India using an Infra-Red sensor-based device. The critical leading time headway is determined for the different CVs (platoon leaders) based on the mean absolute relative speed of platoons. The speed-flow-density plots are established using the macroscopic fundamental diagrams for the highway sections under regimes A and B to quantify the platooning impacts of CVs on the traffic characteristics. The study findings reveal that the speed at capacity, density at capacity, and traffic capacity decreased significantly due to CVs' influence on the general traffic mix during the mixed traffic platooning conditions. However, this effect was found to be relatively higher during the Heavy Commercial Vehicle operation as a platoon leader compared to Medium Commercial Vehicle and Light Commercial Vehicle as a platoon leader.

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Analysis of Traffic Flow Characteristics Based on Area-Occupancy Concept on Urban Arterial Roads Under Heterogeneous Traffic Scenario—A Case Study of Tiruchirappalli City

Singh

Vidya

Shukla³

et al. 2021

Lecture Notes in Civil Engineering

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Effect of Heavy Transport Vehicles on Speed-Flow Characteristics of Mixed Traffic on Multi Lane Divided Intercity Highways

Cited by 12 publications

References 7 publications

Applying Two-parameter Weibull Distribution to Model Stochastic Capacity of Arterial Roads During Peak Hours due to Changing Proportion of Heavy Vehicles

Applying Two-parameter Weibull Distribution to Model Stochastic Capacity of Arterial Roads During Peak Hours due to Changing Proportion of Heavy Vehicles

Effect of Mixed Traffic Platooning by Commercial Vehicle Types on Traffic Flow Characteristics of Highways

Analysis of Traffic Flow Characteristics Based on Area-Occupancy Concept on Urban Arterial Roads Under Heterogeneous Traffic Scenario—A Case Study of Tiruchirappalli City

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