There have beenmany changes, and Patrolman LesterWire, of the traffic squad, urges drivers of all kinds of vehicles to read theordinances closeb'.Among the ordinances are provisions that autoists must dim the lightson automobiles operated on the best-ugiueu resiaence streeis ana an mebusiness streets of the city; that automobiles must have mufflers to deaden the noise of the exhausts; the automobi