@article{ref1,
title="Applying the level-of-service concept to climbing lanes",
journal="Transportation research record",
year="1981",
author="Polus, Abishai and Craus, Joseph and Grinberg, Itzhak",
volume="806",
number="",
pages="28-33",
abstract="A summary is presented of one phase of a multiphase study that deals with heavy-vehicle flow on downgrades and is concerned with geometric and flow warrants for the inclusion of truck climbing lanes on two-lane rural highways. One criterion for the introduction of climbing lanes on two-lane rural highways for both upgrade and downgrade directions is based on the level-of-service concept; another criterion is based on speed reduction. A suggested set of volume graphs is devised for the level-of-service criterion, and extensive use is made of a previously developed model for truck equivalency factors. A scheme for the relative location and signing of climbing lanes is also presented.<p />",
language="en",
issn="0361-1981",
doi="",
url="http://dx.doi.org/"
}