I'm currently making regular morning and evening roundtrips on I-395 near DC. My northbound segment in the morning is in the same direction as most traffic (into the city), and the entrance is metered. When I do that same segment in the evening, it's the less traveled direction, and there is no metering. This is interesting because the evening drive is often just as slow as the morning drive, even though there's less traffic, something I blame entirely on the lack of entrance metering.
