A handful of roads in Grass Valley are poised for speed limit increases and couple are slated for decreases — decisions that must be approved by the city council. Two of the biggest streets’ segments selected for increases are East Main Street and Brunswick Road. East Main Street between Hughes Road and Sierra College Drive is proposed for a 5 mph-increase, up to 35 mph. As is Brunswick Road, between East Main Street and Town Talk Road, which would push its speed up to 40 mph. “Most of the them are five mile an hour changes,” said Tim Kiser, director …