@article{ref1,
title="Lane-change frequencies in freeway traffic flow",
journal="Highway research record",
year="1972",
author="Pahl, Juergen",
volume="409",
number="",
pages="17-33",
abstract="Lane-change frequencies of existing vehicles close to their intended off-ramp and of through vehicles were determined empirically for an 8-, a 6-, and a 4- lane freeway site. The results were obtained for various flow levels and as a function of upstream distance from the off-ramp. The data base used in this study was acquired by a methodology that involved aerial photographic techniques and that resulted in digitized space-time trajectories of all vehicles traversing the study sites. For each studied flow level at the various sites, lane-change frequencies are presented for each lane pair as well as for both exiting and through vehicles independent of lanes. The results show clearly that the greatest frequency of exiting-vehicle lane changes is toward the right lane and that a corresponding increased frequency of through-vehicle lane changes is toward the left lane. At the off-ramp, where the exiting vehicles leave the freeway, through vehicles have been shown to move back toward the right lane and to have high lane-change frequencies. [TRID]<p /><p>Language: en</p>",
language="en",
issn="0073-2206",
doi="",
url="http://dx.doi.org/"
}