Route 37 has been proposed to be built to freeway standards since the early 1950s.

The route is constructed to freeway standards over its entire length.

Note: None of this highway is of freeway standard, so it would not even be considered a super-2.

The 'new' section of H-1 was, however, built to modern freeway standards.

Except for a single at-grade intersection, it is built to freeway standards.

Since February 1960 a freeway standard of road has been developed along this route.

As a result, the road was rerouted and built to freeway standards.

Plans are underway to develop this piece to freeway standards, however.

It is the only metroad in Sydney to be fully freeway standard.

Neither was up to modern freeway standards, utilizing left turns across the opposing direction at access points.