Voters in Saturday’s annual town election will decide contests for the Board of Selectmen and School Committee, as well as a number of Town Meeting seats, and weigh in on the town’s Massachusetts Avenue project and overnight parking ban. Polls will be open from 8 a.m. to 8 p.m. Incumbent Selectman Kevin Greeley is vying with Town Meeting member Maria Romano in the race for a three-year term on the board. School Committee incumbents Kirsi Allison-Ampe and Judson Pierce and challenger Michael Buckley are in a race for two three-year terms on the panel. One of two nonbinding items on the ballot, Question 1 was sponsored by the East Arlington Concerned Citizens Committee, and asks voters whether the town should continue to have four vehicular travel lanes on Massachusetts Avenue in East Arlington. A project proposed by the town would reduce the number of travel lanes for motorized vehicles, and add bicycle lanes, and sidewalk and pedestrian improvements. Selectmen placed Question 2 on the ballot to ask voters whether they favor the town bylaw that prohibits parking on public streets between 1 a.m. and 7 a.m. The official ballot can be previewed on the town’s website at www.arlingtonma.gov/elections.