Abstract
AbstractWireless communication among vehicles and roadside infrastructure, known as connected vehicles, is expected to provide higher-resolution real-time vehicle data, which will allow more effective traffic monitoring and control. Availability of connected vehicle technology among the vehicle fleet will likely grow gradually, but it will possibly remain limited, with many drivers potentially being unwilling to transmit their locations. This is problematic given that research has indicated that the effectiveness of many connected vehicle mobility applications will depend on the availability of location data from a minimum of 20–30% of roadway vehicles. In an effort to improve the performance of connected vehicle applications at low connected vehicle technology penetration rates, the authors propose a novel technique to estimate the positions of noncommunicating (unequipped) vehicles based on the behaviors of communicating (equipped) vehicles along a signalized arterial. Unequipped vehicle positions are e...
Highlights
The concept of connected vehicles – previously known as IntelliDriveSM or Vehicle Infrastructure Integration – uses advanced wireless communications, global positioning systems (GPS), vehicle sensors, and smart infrastructure to allow vehicles and the infrastructure to communicate wirelessly
Inserted vehicles typically remain in the simulation for 70-80 seconds, unless the equipped vehicle penetration rate is 100%, at which point inserted vehicles remain for only 17.7 seconds on average
The results showed that it is possible to estimate the locations of some unequipped vehicles on an arterial with a reasonable degree of accuracy given necessary data from connected vehicles
Summary
The concept of connected vehicles – previously known as IntelliDriveSM or Vehicle Infrastructure Integration – uses advanced wireless communications, global positioning systems (GPS), vehicle sensors, and smart infrastructure to allow vehicles and the infrastructure to communicate wirelessly. Volpe National Transportation Systems Center estimates that based on vehicle fleet turnover rates, a federal mandate to install DSRC radios in all new vehicles would still only equip half of all vehicles on the road after nine years If both questions can be answered affirmatively, the performance of some connected vehicle applications can be improved at low penetration rates merely by analyzing data from a few equipped vehicles and estimating the positions of unequipped vehicles. These techniques could improve mobility with minimal associated cost. Vehicles that exist only in a simulation, and which represent the location algorithms' estimates of the positions of unequipped vehicles
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