01478314

Component

https://doi.org/10.3141/2395-13

http://scholar.google.com...inga&publication_year=2013

Travel time is viewed by travelers and road managers as one of the key indicators of quality of service. Bluetooth detectors have recently emerged as a viable technology for the acquisition of vehicle travel times. Several studies have described the application of the technology to freeways and compared the measured travel times with the travel times obtained through other technologies. This paper examines the application of Bluetooth detectors to the acquisition of arterial travel times. The arterial environment is substantially more challenging than the freeway environment because of the frequent interruptions in the traffic flow caused by traffic signals. This paper examines the magnitude of errors in detection time and travel time measurement. It is not feasible to use field data to examine the measurement error because the error is inherent within the observations and cannot be separated. Consequently, a simulation framework is proposed to synthesize measurement errors for a range of arterial traffic conditions. The results show that the mean travel time error is essentially zero for all traffic conditions. However, the variance of the error varies as a function of the traffic conditions. Through multiple regression, the standard deviation of the travel time measurement error is modeled, and it is shown that under some conditions, the 95% confidence interval of this error may reach 25% of the true mean travel time. These results can be used to assess Bluetooth detector deployment plans and provide more insight into the reliability of arterial travel time measurements obtained from Bluetooth detectors.

01517906

13-4915

English

pp 111–122

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309287180

Print

Figures (5) ; References (12) ; Tables (1)

Arterial highways; Bluetooth technology; Error analysis; Microsimulation; Monte Carlo method; Regression analysis; Reliability; Travel time

Data and Information Technology; Highways; Operations and Traffic Management; Planning and Forecasting; I71: Traffic Theory

TRIS, TRB, ATRI

Feb 5 2013 12:56PM

• Assessment of Design Hours for Freeways
• Breakdown Maturity Phenomenon at Wisconsin Freeway Bottlenecks
• Complete Enough for Complete Streets? Sensitivity Testing of Multimodal Level of Service in the Highway Capacity Manual
• Development of an Oversaturated Speed–Flow Model Based on the Highway Capacity Manual
• Dynamic Modeling of VISSIM’s Critical Gap Parameter at Unsignalized Intersections
• Enhancements to the Freeway Facilities Method in the Highway Capacity Manual to Enable Reliability Analysis
• Estimation of Incident Propensity for Reliability Analysis in the Highway Capacity Manual
• Lane-Based Breakdown Identification at Diverge Sections for Breakdown Probability Modeling
• Observations and Analysis of Multistep-Approach Lane Changes at Expressway Merge Bottlenecks in Shanghai, China
• Operational Effectiveness of Passing Zones Depending on Length and Traffic Volume
• Rethinking the Driver Population Factor: Examination of Freeways in California
• Revised Version of the Automobile Level-of-Service Methodology for Urban Streets in the Highway Capacity Manual 2010
• Toward a Capacity Analysis Procedure for Nonstandard Two-Way Stop-Controlled Intersections
• Volume-to-Capacity Estimation of Signalized Road Networks for Metropolitan Transportation Planning