@article{ref1,
title="New roads and human health: a systematic review",
journal="American journal of public health",
year="2003",
author="Egan, Mary and Petticrew, Mark and Ogilvie, David and Hamilton, Val",
volume="93",
number="9",
pages="1463-1471",
abstract="We sought to synthesize evidence of the health  effects of construction of new roads by systematically reviewing observational  studies of such effects. We included and critically appraised 32 studies. The  review suggested that out-of-town bypasses decrease injuries on main roads  through or around towns, although more robust evidence is needed on effects on  secondary roads. New major urban roads have statistically insignificant effects  on injury incidence. New major roads between towns decrease injuries.  Out-of-town bypasses reduce disturbance and community severance in towns but  increase them elsewhere. Major urban roads increase disturbance and severance.  More robust research is needed in this area, particularly regarding effects of  new roads on respiratory health, mental health, access to health services, and  physical activity.",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}