Car following theory with lateral discomfort

Günay, Banihan

doi:10.1016/j.trb.2007.02.002

Cited by 172 publications

(86 citation statements)

References 8 publications

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“…Gunay [7] defined the term lane-based driving discipline as the tendency to drive within a lane by keeping to the center as closely as possible (unless in lane changing). Gunay [1] remarked that when two vehicles travel parallel to each other, they tend to shy away. A new car-following relationship which is based on staggered car-following is developed, where the lateral frictional discomfort between moving vehicles is taken into account.…”

Section: Previous Work On Staggered Car-followingmentioning

confidence: 99%

“…Thus, a study is needed which develops a model of LC for each type of vehicles, or rather, between pairs of different vehicle types. Previous studies by Gunay [1] made consideration for loose lane discipline and function of available width for overtaking vehicles, whereas Pal and Mallikarjuna [2] and Mallikarjuna et al [3] presented a rough estimation of lateral interaction between vehicles using image processing-based vehicle detection software. However, these studies lack in largescale accurate data collection from aforesaid traffic streams.…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of lateral vehicular interactions in heterogeneous traffic with weak lane discipline

Budhkar

Maurya

2017

J. Mod. Transport.

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Heterogeneous traffic conditions prevail in developing countries. Vehicles maintain weak lane discipline which increases lateral interactions of vehicles significantly. It is necessary to study these interactions in the form of maintained lateral gaps for modeling this traffic scenario. This paper aims at determining lateral clearances maintained by different vehicle types while moving in a heterogeneous traffic stream during overtaking. These data were collected using an instrumented vehicle which runs as a part of the stream. Variation of obtained clearance with average speed of interacting vehicles is studied and modeled. Different instrumented vehicles of various types are developed using (1) ultrasonic sensors fixed on both sides of vehicle, which provide inter-vehicular lateral distance and relative speed; and (2) GPS device with cameras, which provides vehicle type and speed of interacting vehicles. They are driven on different roads in six cities of India, to measure lateral gaps maintained with different interacting vehicles at different speeds. Relationships between lateral gaps and speed are modeled as regression lines with positive slopes and beta-distributed residuals. Nature of these graphs (i.e., slopes, intercepts, residuals) are also evaluated and compared for different interacting vehicle-type pairs. It is observed that similar vehicle pairs maintain less lateral clearance than dissimilar vehicle pairs. If a vehicle interacts with two vehicles (one on each side) simultaneously, lateral clearance is reduced and safety of the vehicles is compromised. The obtained relationships can be used for simulating lateral clearance maintaining behavior of vehicles in heterogeneous traffic.

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Section: Previous Work On Staggered Car-followingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characteristics of lateral vehicular interactions in heterogeneous traffic with weak lane discipline

Budhkar

Maurya

2017

J. Mod. Transport.

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“…In these countries, poor road conditions, irregular driving discipline, unclear road markings, and different lane widths typically lead to non-lane-based car-following driving (Gunay, 2007). Heterogeneous traffic, characterized by diverse vehicles, changing composition, lack of lane discipline etc., results in a very complex behavior and a non-lane-based driving in most Asian countries (Mathew and Radhakrishnan, 2010).…”

Section: Basic Theoretical Backgroundmentioning

confidence: 99%

“…A few researchers have contributed efforts on this matter. Gunay (2007) first developed a car-following model with lateral discomfort. He improved a stopping distance based approach that was proposed by Gipps (1981), and presented a new car-following model, taking into account lateral friction between vehicles.…”

Section: Basic Theoretical Backgroundmentioning

confidence: 99%

Methods for the Assessment of Performance Indication Measures at Amakom Intersection and Their Application in Micro Simulation Modeling

Nyantakyi

Owusu²,

Borkloe³

2014

IJTTE

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Signalized intersections are vital nodal points in a transportation network and their efficiency of operation greatly influences the entire network's performance. Traffic simulation models have been widely used in both transportation operations and traffic analyses because simulation is safer, less expensive, and faster than field implementation and testing. This study assessed performance indication measures at Amakom intersection using micro simulation models in Synchro/SimTraffic. Traffic, geometric and signal control data including key parameters with greatest impact on the calibration process were collected on the field. At 5% significant level, the Chi square test and t-test analyses revealed that headway had a strong correlation with saturation flow compared to speed for both field and simulated conditions. It was concluded that changes in phasing plan with geometric improvement would improve upon the intersection's level of service.

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“…It is thus important to study the relationship of staggering with car-following parameters such as distance headway, velocities and also vehicle types of a pair of vehicles in such a traffic stream. Few work, such as that by Gunay (2007) has been done in this regard.…”

Section: Introductionmentioning

confidence: 99%

Modeling Gap-Maintenance in Heterogeneous No Lane-Discipline Traffic

Budhkar¹,

Maurya²

2017

dtetr

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Traffic stream of developing countries have a characteristic heterogeneous traffic stream moving in a weak or no lane-discipline. Due to these reasons, state-of-the-art carfollowing models cannot replicate vehicular interactions in developing countries. Carfollowing behavior is in a staggered fashion, with following gap changing as per amount of stagger, vehicle type of leading and following vehicles as also their speeds. The aim of this paper is to determine the variation in longitudinal gap as staggering or centerline separation, and speed changes, for different leading and following vehicle pairs moving in a heterogeneous traffic stream.A top view video of moving traffic is recorded with accurate field markings. Twelve mid-block sections in cities of India are selected for this purpose; each having ideal roadway conditions and varying widths and flow levels. Camera calibration technique of vanishing point method is adopted for extracting vehicle pairwise trajectory data from different sections. From these data, leading and following vehicle sizes, their speeds, types are noted along with longitudinal gap, centerline separation between them. Data are processed for finding relationships, and model is calibrated and validated.It is seen that longitudinal gap increases with decrease of centerline separation and increase of speed. The graphs change for varying vehicle types and speed ranges. Established relationships can be used for modeling gap-maintenance characteristics in heterogeneous traffic.

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Car following theory with lateral discomfort

Cited by 172 publications

References 8 publications

Characteristics of lateral vehicular interactions in heterogeneous traffic with weak lane discipline

Characteristics of lateral vehicular interactions in heterogeneous traffic with weak lane discipline

Methods for the Assessment of Performance Indication Measures at Amakom Intersection and Their Application in Micro Simulation Modeling

Modeling Gap-Maintenance in Heterogeneous No Lane-Discipline Traffic

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