The Worcester County Conservation District has countywide boundaries. Tulare County Transit provides a countywide bus service linking the population centers. County police tend to exist only in metropolitan counties and have countywide jurisdiction. The county executive is elected in a countywide vote. The county executive is elected in a spring countywide, nonpartisan vote. The county also has a non-partisan elected school board to oversee the countywide school district. Suffolk County Council is responsible for major services which are provided countywide. The county judge presides as chairman, and is elected every four years by voters countywide. New Jersey distinguishes between regional, consolidated and countywide school districts and those serving single municipalities. It is governed by five Port Commissioners, who are elected countywide and serve four-year terms. Local district courts are presided over by full-time judges in countywide elections. A sheriff, coroner, and revenue commissioner are elected in at-large positions countywide. Yavapai College was established in 1965 by means of a countywide election. The board comprises five members, elected countywide. The street names in Arlington generally follow a unified countywide convention.