Estimating Percent Time Spent Following on Two-Lane Highways: Field Evaluation of New Methodologies
The current research aims at examining two new methodologies for the estimation of percent-time-spent following (PTSF) on two-lane highways. A total of 236 hour of field data including individual speeds and headways were collected at three study sites in the state of Montana. The study examined the sensitivity of PTSF estimates from the new methods to some important platooning variables. Also, the study included a comparison of PTSF estimates from the new procedures versus those found using the current Highway Capacity Manual (HCM) analytical procedures. The study showed that the two new methodologies notably outperformed the current HCM procedures in capturing the effect of platooning variables on PTSF estimates. Also, the empirical evaluation proved that performance-based vehicle stratification is superior to dimension-based (class based) vehicle stratification for the purpose of estimating the PTSF. Study results suggest that the two new methods are promising in advancing the current analytical procedures for two-lane highways.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Al-Kaisy, Ahmed Fouad
- Durbin, Casey
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Conference:
- Transportation Research Board 86th Annual Meeting
- Location: Washington DC, United States
- Date: 2007-1-21 to 2007-1-25
- Date: 2007
Language
- English
Media Info
- Media Type: CD-ROM
- Features: Figures; References; Tables;
- Pagination: 16p
- Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM
Subject/Index Terms
- TRT Terms: Field tests; Highway capacity; Highway operations; Methodology; Operations; Performance based specifications; Traffic platooning; Two lane highways
- Identifier Terms: Highway Capacity Manual
- Uncontrolled Terms: Percent time spent following
- Geographic Terms: Montana
- Subject Areas: Administration and Management; Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 01049383
- Record Type: Publication
- Report/Paper Numbers: 07-1250
- Files: TRIS, TRB
- Created Date: May 9 2007 7:47AM