officer of the city commission and has a voice and a vote in its proceedings but no veto power. Click here to see a list of mayors of Gainesville Elections and terms of office Municipal elections are nonpartisan and use a two-round system, i.e., if no candidate receives a majority of the vote, a runoff election ensues between the two candidates who received the most votes. The mayor and other commissioners are elected to a term the length of which is in transition; in any case, neither the mayor nor any other commissioner may serve more than two consecutive terms, excepting following a partial term created by a vacancy. Mayoral terms are reckoned separately from terms as another commissioner, allowing a commissioner to serve more consecutive terms by alternating between the positions. Departments Law enforcement is provided by Gainesville Police Department, except on the University of Florida campus, which operates the University Police Department. Fire protection within the city limits is provided by the Gainesville Fire Rescue, while the surrounding county is served by the Alachua County Fire Rescue. Alachua County Fire Rescue provides ambulance services for the whole county. Municipal buildings Gainesville's city hall is at 200 E University Avenue. Gainesville Police Department is at 545 NW 8th Avenue. Transportation In 2009, the Gainesville metropolitan statistical area (MSA) ranked seventh highest in the United States in percentage of commuters who biked to work (3.3 percent). Major roads Gainesville has an extensive road system, which is served by Interstate 75, and several Florida State Routes, including State routes 20, 24, and 26. Gainesville is also served by US 441 and nearby US 301, which give a direct route to Jacksonville, Ocala, and Orlando. I-75 runs northwest and southeast across the western edge of the city, with interchanges at SR 121/SR 331 (exit 382), SR 24 (exit 384), SR 26 (exit 387), and SR 222 (Exit 390). US 441 is the main local north–south road through Gainesville. It runs on the eastern edge of the University of Florida. It is known to locals as 13th Street, before curving to the northwest and finally joining SR 20, converting into an additional hidden state road. At the intersection of SR 121, the DeSoto Trail moves from SR 121 to US 441. SR 20 runs northwest and southeast through Gainesville. In east Gainesville, the road again becomes a stand-alone four-lane highway as it heads