@article{ref1,
title="Evaluation of wheel blocking for vehicles parked on slopes",
journal="Journal of safety research",
year="1975",
author="Taylor, Deborah L. and Kane, TR",
volume="7",
number="3",
pages="119-126",
abstract="A safety measure commonly employed to prevent vehicles parked on sloping roadways from rolling accidentally is to block one or more wheels either by inserting a suitable object between the roadway and the real or by using an available curb as a blocking device.  An analytical study of the equilibrium of a vehicle in this state permits assessment of the relative advantages and disadvantages of blocking lower or upper wheels, reveals that vehicle weight and block shape or unimportant, and leads to a description of various failure modes.  The relationship between curb height and maximum safe roadway slope is explored, and it is shown that trucks present a greater safety hazard than do passenger automobiles.<p />",
language="en",
issn="0022-4375",
doi="",
url="http://dx.doi.org/"
}