U.S. Route 30 (US 30) is a road in the United States Numbered Highway System that runs from Astoria, Oregon, to Atlantic City, New Jersey. In Indiana, the route runs from the Illinois state line at Dyer to the Ohio state line east of Fort Wayne and New Haven. The of US 30 that lie within Indiana serve as a major conduit. The entire length of U.S. Route 30 in Indiana is included in the National Highway System (NHS). The highway includes four-lane, rural sections, an urbanized, four-lane divided expressway, and several high-traffic, six-lane freeway areas. First designated as a US Highway in 1926, US 30 replaced the original State Road 2 (SR 2) and SR 44 designation of the highway which dated back to the formation of the Indiana State Road system. A section of the highway originally served as part of the Lincoln Highway. Realignment and construction projects have expanded the highway to four lanes across the state, and the road is now part of a long stretch of US 30 from New Lenox, Illinois, to Canton, Ohio, where the road has at least four lanes (excluding ramps). There are over 40 traffic signals between I-65 at Merrillville and I-69 at Fort Wayne. Route description The entire length of U.S. Route 30 in Indiana is included in the National Highway System (NHS), a network of highways that are identified as being most important for the economy, mobility and defense of the United States. The highway is maintained by the Indiana Department of Transportation (INDOT), similar to all other U.S. Highways in the state. The department tracks the traffic volumes along all state highways as a part of its maintenance responsibilities using a metric called average annual daily traffic (AADT), calculated along a segment of roadway for any average day of the year. In 2010, INDOT figured that lowest traffic levels were 10,870 vehicles and 4,750 commercial vehicles used the highway daily between US 31 and SR 331. The peak traffic volumes were 69,280 vehicles and 12,660 commercial vehicles AADT along a section of US 30 that is concurrent with I-69, between the Lima Road (interchange 311) and Coldwater Road (interchange 312) exits in Fort Wayne. Illinois to Valparaiso US 30 enters Dyer from Lynwood, Illinois, along the original alignment of the Lincoln Highway, as a four-lane divided highway. At Moeller Street, the roadway becomes a four-lane highway with