|
Books > Professional & Technical > Civil engineering, surveying & building > Highway & traffic engineering
This publication contains guidance for preparing plans and
specifications and for ensuring the quality of recycled bituminous
concrete. In addition, this manual provides useful information to
design engineers, laboratory personnel, and inspectors concerning
the mix design, plant production, and laydown of recycled pavement
mixtures. Recycling pavement materials has proved to be a feasible
process to rehabilitate worn-out pavements. Since recycled
pavements will not always be cost-effective, recycling should be
considered when repairing or rehabilitating existing pavements.
This report presents results on the demographics of safety belt use
from the 2003 National Occupant Protection Use Survey (NOPUS), with
particular emphasis on results that evaluate aspects of the 2003
Click It or Ticket campaign to raise safety belt use nationwide.
This study explores the relationship between vehicle occupancy and
several other variables in the National Highway Traffic Safety
Administration's (NHTSA) Fatality Analysis Reporting System (FARS)
database and a 15-passenger van's risk of rollover. A univariate
analysis is used to demonstrate the effect of selected variables on
single-vehicle rollover crashes. Variables used include speed,
number of occupants, driver experience and avoidance maneuvers.
Also, a logistic regression model is constructed using data from
NHTSA's State Data System - a collection of all police reported
crashes for that state. The resulting model permits jointly
estimating the effect of these variables on the odds and rate of
rollover occurrence, conditional on being in a single-vehicle
police-reported crash.
|
|