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 “"lane changes"”.
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Modeling Slow Lead Vehicle Lane Changing
… field experiment data were used to investigate lane changes in which a slow lead vehicle was present to: 1) characterize lane changes, 2) develop predictive models, 3) provide collision avoidance system (CAS) design guidelines. A total of 3,227 slow lead vehicle lane changes over 23,949 miles …
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Advanced Speed Control Strategies to Reduce Delay and Improve Safety of Car-Truck Mixed Traffic Flow
… DVSL also had the lowest number of truck lane changes but it had higher number of car lane changes than USL and U&D. This increase in the number of car lane changes rather created more spacing between vehicles in the right lane upstream of the on-ramp. More spacing allowed the vehicles …
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An Analysis of Traffic Behavior at Freeway Diverge Sections using Traffic Microsimulation Software
… VISSIM, and CORSIM, to investigate the lane changing behavior as vehicles approach a freeway diverge area. The count of lane changes, lane use distribution, and visual inspection of the simulated lane changing behavior was compared to video data collected at two freeway diverge areas on …
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Parameter estimation and statistical inference of a two-regime car-following model
… of oscillations, capacity drop in the absence of lane changes, and the concave growth pattern of vehicle speeds along a platoon. The probability density of vehicle positions turns out to be analytical in our model, and therefore parameters can be estimated using maximum likelihood. This allows us …
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Analysis and detection of driver fatigue caused by sleep deprivation
… continue such routine driving tasks as straight lane tracking, following a lead vehicle, lane changes, etc. In the second part of the thesis we present both qualitative and quantitative guidelines for designing drowsy driver detection systems in a probabilistic framework based on the Bayesian …
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Ramp control strategies and geometric design implications of high-speed automated transportation systems
… the ramp and highway would be very acute and lane changes from acceleration lane to the cruising lane would follow a smooth trajectory. The curve would be composed of two circular curves of large radii of curvature or two spiral curves in succession. The adequacy of the existing geometric …
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SenSys: A Smartphone-Based Framework for ITS applications
… vehicle dynamics such as vehicle's stops, lane changes, turn detection, and accurate vehicle speed calculation that, in turn, will enable development of new ITS applications and services.</p>
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Microscopic Simulation Model for Mixed Traffic of Connected Automated Vehicles and Conventional Vehicles on Freeways
… segment by incorporating the car-following and lane-changing models via a conditional linkage to investigate the sensitivities in highway capacity and travel time. The car-following models for CAVs and MDVs were modified from the full-velocity difference (FVD) car-following model, while the …
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Exploring the Influence of Anger on Takeover Performance in Semi-automated Vehicles
… takeovers in semi-automated vehicle on a 3-lane highway. Between takeovers, participants performed a secondary task (i.e., online game) on a tablet. There were no significant differences in takeover reaction time between angry and neutral drivers. However, angry drivers drove faster which …
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Adaptive Longitudinal and Lateral Control for Autonomous Vehicles: High-Speed Platooning of Articulated Trucks
… including challenging trajectories such as dual lane changes, and actual roadways like sections of the Blue Ridge Parkway in Virginia and South Grade Road in California, validated the integrated framework. Despite minor anomalies in high-stress conditions, the results demonstrate acceptable …
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Efficacy of Speed Monitoring Displays in Increasing Speed Limit Compliance in Highway Work Zones
… in unpredictable ways (such as sudden braking or lane changes), and because vehicles are more likely to be traveling closer together (due to decreased capacity). Researchers are looking at several mechanisms for improving safety in highway work zones, including lowering the mean speed of vehicles …
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Characterizing and Comparing the ADS Maneuver Execution Subsystem Performance of Two Vehicles
… delay before turning and tended to overshoot lane changes at higher lateral accelerations. Regarding disturbances, only the road grade significantly affected the response of both vehicles.
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A Framework for Incident Detection and notification in Vehicular Ad-Hoc Networks
… drivers to traffic events including accidents, lane closures, slowdowns, and other traffic-safety issues.</p> <p>In this thesis, we propose a novel framework for incident detection and notification dissemination in VANETs. This framework consists of three main components: a system architecture, …
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Information Freshness: How To Achieve It and Its Impact On Low- Latency Autonomous Systems
… (SUMO) software to account for overtaking, lane changes, etc. We propose a safety metric that indicates the collision risk of a vehicle and do a simulation-based study on the ns3 simulator to study its relation to AoI. We see that the broadcast rate in a Dedicated Short Range Network (DSRC) …