Exchanging a bumpy surface for a smooth one may be encouraging some motorists to exceed the posted speed limit on North Chancery Street.“We have gotten complaints about speeding on North Chancery,” said McMinnville Police Chief Bryan Denton. “It could just be perception. When you are sitting still, sometimes it’s hard to judge how fast something is moving.”To see exactly how fast motorists are traveling down newly paved N. Chancery, the police department placed its speed trailer beside the street.