Highway Capacity Software
| Initial release | 1986 |
|---|---|
| Stable release | 8.1 (called 2022)
/ Feb 9, 2022 |
| Engine | |
| Operating system | MS Windows |
| License | Subscription |
| Website | https://mctrans.ce.ufl.edu/hcs/ |
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The Highway Capacity Software (HCS) is a macroscopic traffic simulation software developed by the McTrans Center at the University of Florida.
HCS performs traffic capacity analyses based on the Highway Capacity Manual (HCM). The HCM concepts, guidelines, and computational procedures for assessing the capacity and quality of service (in terms of the level of service[1]) of various highway types are implemented in the HCS[2][3]. HCS can assess the operational performance of freeways, highways, rural highways, arterial roads, roundabouts, signalized and unsignalized intersections, and the effects of mass transit, pedestrians, and bicycles on the performance of these systems[3].
History
In 1986, the Federal Highway Administration (FHWA) funded the first effort to develop Highway Capacity Software to ease the use of HCM methods[4]. McTrans Center at the University of Florida took the lead in this effort and in 1987 released the first version of HCS to ease the implementation of the 1985 Highway Capacity Manual.
The latest release of HCS is 8.1 (called the 2022 version) which was released in February 2022. Version 8 of HCS uses the 7th Edition of the Highway Capacity Manual as the basis of the computations.
Methodological basis
The methods implemented in the HCS have the following characteristics:
- Deterministic: Always produces the same results for a given set of inputs, with the exception of travel time reliability[1]
- Macroscopic: Considers average conditions experienced by vehicles over a period of time (typically 15 minutes or 1 hour)[1]
Scope of analysis
The latest release (HCS8.1) replicates the scope of analysis of the HCM 7th edition and can perform the following types of analyses:[1]
- Freeways
- Segments (basic, merge, diverge and weaving)
- Facilities
- Capacity and speed adjustments
- Managed lanes and truck procedures
- Travel time reliability and ATDM
- Highways
- Multilane highways
- Two-lane highways
- Streets
- Stop-controlled intersections: two-way stop control and all-way stop control
- Roundabout capacity and corridors
- Signalized intersections
- Alternative intersections: Superstreet, Michigan left, Continuous-flow intersection
- Interchanges: Diamond, single-point urban interchange, parclo, diverging diamond interchange
- Lane blockage and sustained spillback
- Travel Time Reliability and ATDM
- Signal Timing Optimization for signalized intersections[5]
References
- ↑ 1.0 1.1 1.2 1.3 "Highway Capacity Manual, Sixth Edition: A Guide for Multimodal Mobility Analysis | Blurbs New | Blurbs | Main". www.trb.org. Retrieved January 16, 2022.
- ↑ "Definition, Interpretation, and Calculation of Traffic Analysis Tools Measures of Effectiveness - 4.0 Calculation of MOEs by Traffic Analytical Tools". ops.fhwa.dot.gov. Retrieved January 16, 2022.
- ↑ 3.0 3.1 McTrans. "HCS Overview". McTrans Center. Retrieved January 16, 2022.
- ↑ Prassas, Elena S.; P. Roess, Roger (2020), Prassas, Elena S.; P. Roess, Roger, eds., "The Highway Capacity Manual and the Committee on Highway Capacity and Quality of Service", The Highway Capacity Manual: A Conceptual and Research History Volume 2: Signalized and Unsignalized Intersections, Cham: Springer International Publishing, pp. 1–16, doi:10.1007/978-3-030-34480-1_1, ISBN 978-3-030-34480-1, retrieved 2022-04-09
- ↑ Shayeb, Suhaib Al; Dobrota, Nemanja; Stevanovic, Aleksandar; Mitrovic, Nikola (October 2021). "Assessment of Arterial Signal Timings Based on Various Operational Policies and Optimization Tools". Transportation Research Record: Journal of the Transportation Research Board. 2675 (10): 195–210. doi:10.1177/03611981211011165. ISSN 0361-1981.
External Links
- McTrans Center
- TRB Highway Capacity Manual, 6th edition
- Highway Capacity and Quality of Service Committee
- HCM Volume 4: Applications Guide
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