Dual-lane and Two-lane

Dual-lane adjective - Having a median strip or island between lanes of traffic moving in opposite directions.

Two-lane and dual-lane are semantically related. In some cases you can use "Two-lane" instead an adjective phrase "Dual-lane".

Two-lane adjective - Having a lane for traffic in each direction.

Dual-lane and two-lane are semantically related. You can use "Dual-lane" instead an adjective phrase "Two-lane".