As gas prices have gone up, so has ridership on the buses of Central Arkansas Transit Authority. Betty Wineland, executive director of CATA, said that ridership on the buses usually averaged around 8,500 trips a day, but in recent weeks, with gas prices well over $3 a gallon, ridership has averaged around 9,000 trips a day, and reached 9,577 on one day that the Authority measured. "Three dollars seems to be the price that will move people from their cars to public transportation," she said. CATA business picked up when gas prices peaked around $4 a few years back, she said. Some of those riders went back to their cars when the price went down, but some have stayed with CATA, at least a couple of days a week, she said.