Why did I think it was illegal to ride on freeways?

....oh cause I live on a rock, under a rock.

I recently really wanted to ride the H3, anybody familiar with Hawaii. I called the police and begged a bit---this road is through some ancient burial grounds, sits above the terrain, has a huge shoulder, views of waterfalls.

They told me no go, big da kine ticket. Are these state laws even though they are federal roads?