Close Competition--Kim Moore, left (this photo), watches closely to be certain of staying inside a tightly marked serpentine course Sunday at the Ann Arbor Transportation Authority's Roadeo. A bus, below, is timed with radar by a sheriff's deputy to ensure that it keeps moving at least 20 miles an hour while skirting a line of barrels without striking any. The Roadeo's winner, with 570 of a possible 750 points, was Steve Raymond, secretary of the AATA employees' union. He will represent AATA at the American Public Transit Association's national roadeo in Washington next October. The winner of last year's AATA Roadeo, Charles Buck, scored a close second Sunday with 562 points. AATA Director Richard J. Simonetta said the course, in Washtenaw Community College's parking area, was set up precisely by national standards and was more difficult this year.