Visualizations of Travel Time Performance Based on Vehicle Reidentification Data
- National Renewable Energy Lab, 15013 Denver West Parkway, Golden, CO 80401
- Center for Advanced Transportation Technology, University of Maryland, College Park, Technology Ventures Building, Suite 2200, 5000 College Avenue, College Park, MD 20742
- Joint Transportation Research Program, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47906
- Lyles School of Civil Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47906
This paper provides a visual reference of the breadth of arterial performance phenomena based on travel time measures obtained from reidentification technology that has proliferated in the past 5 years. These graphical performance measures are revealed through overlay charts and statistical distribution as revealed through cumulative frequency diagrams (CFDs). With overlays of vehicle travel times from multiple days, dominant traffic patterns over a 24-h period are reinforced and reveal the traffic behavior induced primarily by the operation of traffic control at signalized intersections. A cumulative distribution function in the statistical literature provides a method for comparing traffic patterns from various time frames or locations in a compact visual format that provides intuitive feedback on arterial performance. The CFD may be accumulated hourly, by peak periods, or by time periods specific to signal timing plans that are in effect. Combined, overlay charts and CFDs provide visual tools with which to assess the quality and consistency of traffic movement for various periods throughout the day efficiently, without sacrificing detail, which is a typical byproduct of numeric-based performance measures. These methods are particularly effective for comparing before-and-after median travel times, as well as changes in interquartile range, to assess travel time reliability.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1411519
- Report Number(s):
- NREL/JA-5400-70600
- Journal Information:
- Transportation Research Record, Vol. 2646; ISSN 0361-1981
- Publisher:
- National Academy of Sciences, Engineering and Medicine
- Country of Publication:
- United States
- Language:
- English
Similar Records
Convergence of Vehicle and Infrastructure Data for Traffic and Demand Management
2001 New York State NHTS: Travel Patterns of Special Populations