TY - JFULL ID - 134531370 TI - Urban congestion trends. PY - 2009 PB - [Washington, D.C.] : U.S. Department of Transportation, Federal Highway Administration DB - UniCat KW - Traffic engineering KW - Traffic congestion UR - https://www.unicat.be/uniCat?func=search&query=sysid:134531370 AB - ER -