Bluetooth vehicle trajectory by fusing Bluetooth and loops : motorway travel time statistics

Loop detectors are widely used on the motorway networks where they provide point speed and traffic volumes. Models have been proposed for temporal and spatial generalization of speed for average travel time estimation. Advancement in technology provides complementary data sources such as Bluetooth MAC Scanner (BMS), detecting the MAC ID of the Bluetooth devices transported by the traveller. Matching the data from two BMS stations provides individual vehicle travel time. Generally, on the motorways loops are closely spaced, whereas BMS are placed few kilometres apart. In this research, we fuse BMSs and loops data to define the trajectories of the Bluetooth vehicles. The trajectories are utilised to estimate the travel time statistics between any two points along the motorway. The proposed model is tested using simulation and validated with real data from Pacific motorway, Brisbane. Comparing the model with the linear interpolation based trajectory provides significant improvements.

Impact of weather conditions on electric vehicle performance

Seasonal and day-to-day variations in travel behaviour and performance of private passenger vehicles can be partially explained by changes in weather conditions. Likewise, in the electricity sector, weather affects energy demand. The impact of weather conditions on private passenger vehicle performance, usership statistics and travel behaviour has been studied for conventional, internal combustion engine, vehicles. Similarly, weather-driven variability in electricity demand and generation has been investigated widely. The aim of these analyses in both sectors is to improve energy efficiency, reduce consumption in peak hours and reduce greenhouse gas emissions. However, the potential effects of seasonal weather variations on electric vehicle usage have not yet been investigated. In Ireland the government has set a target requiring 10% of all vehicles in the transport fleet to be powered by electricity by 2020 to meet part of its European Union obligations to reduce greenhouse gas emissions and increase energy efficiency. This paper fills this knowledge gap by compiling some of the published information available for internal combustion engine vehicles and applying the lessons learned and results to electric vehicles with an analysis of historical weather data in Ireland and electricity market data in a number of what-if scenarios. Areas particularly impacted by weather conditions are battery performance, energy consumption and choice of transportation mode by private individuals.

An evaluation of head restraints - Federal Motor Vehicle Safety Standard 202.

Mode of access: Internet.

Index of the relative importance of fuel efficiency (IFE) in the motor vehicle market. Final report.

National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

Effects of pavement grooving on friction, braking, and vehicle control. Final report.

Federal Highway Administration, Office of Research and Development, Washington, D.C.

Consumer behavior towards fuel efficient vehicles. Volume III: forecasts of the composition of household motor vehicle holdings. Final report.

National Highway Traffic Safety Administration, Technology Assessment Division, Washington, D.C.

Potential of spark ignition engine, effect of vehicle design variables on top speed, performance and fuel economy. Final report.

National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

Survey of suspension systems on vehicles towing travel trailers II. Volume 15. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

The Motor vehicle act and the Highway travel act /

Mode of access: Internet.

Personal recollections and observations of General Nelson A. Miles, embracing a brief view of the Civil War; or, From New England to the Golden gate, and the story of his Indian campaigns, with comments on the exploration, development and progress of our great western empire;

A campaign against Apaches [1885-86] (Captain Maus' narrative): p. 450-471.

Illinois motor vehicle travel and related data.

Mode of access: Internet.

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Operator's manual for Multiple Integrated Laser Engagement System (MILES), simulator system, firing laser, M67 (NSN 1265-01-077-6081) for M551 vehicle.

"July 1988."