摘要: |
The need to understand the state of traffic and its dynamics is only
increasing on Tennessee’s major roadways. Increasing passenger and
freight demand is driving congestion and safety concerns. Tennessee Department of Transportation (TDOT) is
taking major steps to address these concerns for the motoring public
through capital projects, active traffic management strategies, and real time incident response. A major source of real-time roadway condition
data in Tennessee is the RDS data system. Over 800 detectors across
the state provide information on vehicle counts, classifications, and
speeds. Crucially, they take high-fidelity measurements that are not
available from many alternative sources, while being non-invasive for
easy construction and maintenance. The challenge remains that
powerful insights from the data can be hampered by suboptimal data
quality and usability or availability limitations. Specific limitations that
exist in the RDS data stream include degraded system uptime, short
periodic data outages, a high degree of noise in data at some fidelity
levels, and loss of sensor calibration over time. |