CCT is a big operation, 7,500 rides on any given weekday between its ADA paratransit service and shared-ride program. There are 457 vehicles among six contractors overseen by SEPTA. Because of the volume, appointments must be made at least a day in advance. They try to book customers within two hours of their request times, but during peak hours, I was told, customers have to be "flexible." Rides can be scheduled to arrive at the customer's pickup location 10 minutes before and up to 20 minutes after the scheduled time. Again, SEPTA officials said, "flexibility" is key.