@article{ref1,
title="Light guides for tunnels",
journal="Transportation research record",
year="1996",
author="Sheldon, Jeffrey and Lutkevich, Paul",
volume="1553",
number="",
pages="81-85",
abstract="The use of light guides has been limited to accent or specialty lighting and generally has been considered impractical for large-scale applications. After careful study, 2 mi of light guides were installed in Boston's Callahan Tunnel. The 2-year study and design process is reviewed, and the system's performance after a year of operation is assessed.<p /><p>Language: en</p>",
language="en",
issn="0361-1981",
doi="10.3141/1553-12",
url="http://dx.doi.org/10.3141/1553-12"
}