Four-lane and Toll road

Four-lane adjective - Having two lanes for traffic in each direction.

Toll road and four-lane are semantically related. in highway topic. In some cases you can use "Toll road" instead a noun phrase "Four-lane", when it comes to topics like capacious road.

Toll road noun - An expressway on which tolls are collected.

Four-lane and toll road are semantically related. You can use "Four-lane" instead a noun phrase "Toll road".