In today’s column, I talked with MARTA executives and discuss the virtues and faults of MARTA’s bus system, a service the agency is now analyzing and looking to revamp. With ridership creeping up, it’s a good time to capitalize on the coverage the bus system provides. Part of the solution lies in smaller vehicles, more consistent rides and better frequencies. In our second column, a transit activist writes about the mood in Clayton County as MARTA prepares to introduce service there next month.