Development of Direct Models for Percent Time-Spent Following on Two-Lane Highways

Frontiers in Built Environment

关键词: two-lane highways;    percent time-spent following;    follower density;    level of service;    CORSIM;   

DOI  :  10.3389/fbuil.2020.00001

来源: DOAJ

【 摘 要 】

The percent time-spent following (PTSF) is a key measure for estimating the level-of-service for two-lane highways. However, PTSF is currently estimated indirectly using various measured field data. This study proposes two alternative direct models for estimating PTSF: (1) a general linear regression model using typically-used input variables and (2) a non-linear form using only the follower density. Both models are based on data generated from the corridor micro-simulation (CORSIM) software. Comparison of the proposed models with the new directional PTSF analytical model of the Highway Capacity Manual shows that the proposed models are capable of predicting simulation-generated PTSF quite closely with absolute mean error <3% using two different sets of validation datasets. The results of this research would be useful for a convenient and direct estimation of directional PTSF of two-lane highways.

【 授权许可】

Unknown