This lane is marked by double broken (dashed) yellow lines. What kind of lane is this?

This is a reversible lane. The direction of traffic in this lane may change at various times. Watch for overhead or roadside signs or signals that indicate the lane's current direction of travel. [1. Types of Line Markings, C. Highway Pavement Markings, Section IV - Signals, Signs and Pavement Markings, Maryland Driver's Manual]