The District’s winter weather program remains an imperfect operation, and the agency chief charged with clearing ice and snow will be expected to quickly improve performance, he was told Wednesday.

Emeka Moneme, the new director of the Department of Transportation, was in the spotlight Wednesday asMayor Adrian Fenty unveiled his CapStat program, a performance-based accountability system. Directors face “tough and important questioning” during daily CapStat meetings, Fenty said, and are expected to deliver.