a regular basis to measure the amount of traffic using the state's highways. These traffic counts are expressed in terms of annual average daily traffic (AADT), a calculation of the average daily number of vehicles on a segment of roadway. A July 2011 survey reported average daily traffic of 6,761 vehicles being served the US 95 interchange. Administratively, US 195 does not exist in Idaho. According to ITD's milepoint log, both carriageways are officially US 95 ramps into Washington state. Washington US 195 travels north through the Palouse region of Eastern Washington, from the Idaho state line north to Spokane. The highway serves as an important link between Pullman and Spokane as well as part of the Palouse Scenic Byway and a main north–south route in the region alongside State Route 27 (SR 27). US 195 enters Washington north of Clarkston in unincorporated Whitman County and travels west to an intersection with its spur route, providing a connection to US 95 northbound towards Moscow. The highway continues northwest through farmland and the towns of Uniontown and Colton along Union Flat Creek towards Pullman. US 195 intersects SR 27, also part of the Palouse Scenic Byway, and travels west of Pullman on a highway bypass of the city. The bypass travels through the termini of SR 194 and SR 270 as it leaves the Pullman area heading north towards Colfax along the South Fork Palouse River. US 195 becomes Main Street within Colfax and travels through the town along a WSDOT rail line to the eastern terminus of SR 272 and SR 26. The highway continues north along Pine Creek and the WSDOT rail line past the northern terminus of SR 271, a diamond interchange south of Rosalia, before leaving the Palouse Scenic Byway at the Spokane County border. The roadway heads north through a diamond interchange in Plaza and along Spangle Creek past the community of Spangle. US 195 enters the city of Spokane as a four-lane highway along Hangman Creek and ends at a partial cloverleaf interchange with I-90, cosigned with US 2 and US 395. US 195 is defined by the Washington State Legislature as SR 195, part of the Revised Code of Washington as §47.17.380. Every year, WSDOT conducts a series of surveys on its highways in the state to measure traffic volume. This is expressed in terms of AADT, which is a measure of traffic volume