MD highways are fine as are most secondary roads. Sometimes an outside lane will disappear suddenly for no reason (pet peeve for MD) so try to remain in the middle lanes to avoid a sudden necessary lane change.

VA is different. Although they will clear a lane completely (no sudden snowbanks), there may be limited lanes such as 3 instead of 4. In addition secondary roads and ramps are NOT cleared. Interstates I-81 and I-64 remain snowpacked although plowed. We don't use the same chemicals as Maryland, so the ice and snow pack persists.