Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Gap acceptance"”.
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Modeling gap acceptance at freeway merges
… develops a merging model that captures the gap acceptance behavior of drivers that merge from a ramp into a congested freeway. Merging can be classified into three types: normal, forced and cooperative lane changing. The developed merging model uses a single critical gap function, which …
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GAP ACCEPTANCE STUDY USING VIDEO IMAGE PROCESSING
… are one of the common ways of data collection in gap acceptance studies. Tedious and laborious as it is, this manual method is rather inaccurate in time recording. Using a carefully chosen site for investigation, this thesis proposes that it is possible to employ a more automated process to obtain …
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Modeling Permissive Left-Turn Gap Acceptance Behavior at Signalized Intersections
… presented in this thesis, studies driver gap acceptance behavior for permissive left turn movements at signalized intersections. The thesis attempts to model the gap acceptance behavior using three different approaches, a deterministic statistical approach, a stochastic approach, and a …
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Modelling pedestrians’ utilisation of crossing facilities, gap acceptance and crossing decision in urban area
… new insights and develop models for pedestrian gap acceptance, crossing decision and utilisation of zebra crossings among pedestrians using regression model techniques. The critical gaps for pedestrians were estimated using Raff’s method from studies conducted at 12 locations in different …
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Evaluation of Driver Performance While Making Unprotected Intersection Turns Utilizing Naturalistic Data Integration Methods
… of glances to locations in the driver's view, gap-acceptance/rejection time. Kinematic dependent variables include peak/average speed, and peak longitudinal and lateral acceleration. Results indicated that visual entropy and peak speed differs amongst drivers of the three age-groups (older, …
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A merging model for motorway traffic
… studies of merging behaviour are based on gap acceptance models developed mainly for urban intersections, which tend to oversimplify the very complex dynamic interactive merging behaviour involved. It is believed that this research represents the first comprehensive investigation and …
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A simulation model of road user behaviour and traffic conflicts at unsignalized intersections
… situations. The Author rejected the use of pure gap acceptance criteria to describe driver's behaviour at unsignalized intersections. As an alternative, a combination of some aspects of the gap acceptance criteria and the effect of several parameters including driver’s characteristics such as age …
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Microscopic Simulation Model for Mixed Traffic of Connected Automated Vehicles and Conventional Vehicles on Freeways
… speed was employed for CAVs. The stochastic gap acceptance was applied for MDVs to replicate the stochasticity of the gaps accepted by human drivers, whereas the static gap acceptance was adopted to establish the safe decision-making thresholds for CAVs prior to performing lane changes. Two …
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Anticipatory behavior in lane changing models
… behavior of drivers. The model is essentially a gap acceptance model that explicitly captures normal and forced merging behavior of vehicles merging from the on-ramp to the freeway.
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An observational study of freeway lane-changing behaviour
… of the vehicle, the availability of acceptable gaps, and the driver risk, which is the value the driver places on the probability of collision during a maneuver, i.e. the higher the perceived probability of collision, the higher the time-lag. Modelling of the lane-changing phenomenon has been …
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Modeling drivers' acceleration and lane changing behavior
… a lane change, choice of a target lane, and gap acceptance. Since acceptable gaps are hard to find in a heavily congested traffic, a forced merging model that captures forced lane changing behavior and courtesy yielding is developed. A discrete choice model framework is used to model the …
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Development of a micro-simulation model for motorway roadworks with the use of narrow lanes and lane closure schemes
… developed based on car-following, lane changing, gap acceptance, lane closure and narrow lanes rules.Data from four sources (taken from different sets of data from UK motorways sites) were collected and analysed. The data was used in developing, calibrating and validating the model. Observations …
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Calibration Procedure for a Microscopic Traffic Simulation Model
… parameters such as car-following sensitivity and gap acceptance because it can be difficult to obtain accurate estimates for these parameters. While recent research has indicated that the accuracy of a simulation model can significantly improve if driver behavior parameters are calibrated to local …
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Effect of vehicle type on highway traffic flow: Effects of vehicle type on speed, delay and capacity characteristics of highway traffic flow in the United Kingdom and Saudi Arabia determined by an examination of traffic data.
… s r e p o r t e d . Details a r e given of t h e gap acceptance of varying v e h i c l e t y p e s , t h e e f f e c t of v e h i c l e type on delay and comparisons a r e made with e x i s t i n g recommendat i o n s f o r t h e c a p a c i t y design of roundabout e n t r i e s . Observations of …
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Developing Microscopic Toll Plaza Model Using Paramics
… in nature), do not take into account headway, gap acceptance, or inter-vehicle interaction to follow a lead car or to perform lane changing maneuvers. Vehicles just upstream of the toll plaza are assigned to one of the toll lanes, solely based on the payment method (manual, automatic coin …