The web of interstate highways and bustling economy in the area result in many motor vehicle collisions and other accidents. (coreybtrotz.com)
The large majority of traffic traveling the District's busy streets and highways are commercial vehicles bringing goods and services to keep DC's bustling economy running smoothly. (trustedchoice.com)
China's smoke - belching coal plants and heavy traffic may be signs of a bustling economy but health experts fear the country's dirty air is hurting its infants (scientificamerican.com)