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The relationship between ramp length and traffic flow speed (TFS) for interchange

  • School of Transportation Science and Engineering, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The relationship between ramp length and traffic flow speed (TFS) was studied based on analyzing the design elements of geometry alignment for interchange. After analyzing the process of vehicle running in the ramp, the speed change process was divided into four forms, namely, one deceleration and acceleration process, one deceleration process, one acceleration process and more than one deceleration and acceleration process, and then the relationship between the ramp length and TFS was established respectively. Through an example of the HeDa Interchange of Heilongjiang Province, it showed that although the differences of alignment units of ramps can result in various speeds and specific expressions of relationship between ramp length and TFS. However, all of these relations can be expressed by homologous nonlinear function.

Original languageEnglish
Title of host publicationAdvances in Civil Engineering and Architecture
Pages4386-4391
Number of pages6
DOIs
StatePublished - 2011
Externally publishedYes
Event1st International Conference on Civil Engineering, Architecture and Building Materials, CEABM 2011 - Haikou, China
Duration: 18 Jun 201120 Jun 2011

Publication series

NameAdvanced Materials Research
Volume243-249
ISSN (Print)1022-6680

Conference

Conference1st International Conference on Civil Engineering, Architecture and Building Materials, CEABM 2011
Country/TerritoryChina
CityHaikou
Period18/06/1120/06/11

Keywords

  • Interchange
  • Nonlinear function
  • Ramp length
  • Traffic flow speed

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