The public road network, regarded as being under royal protection.
〈英，正式〉（女王保护下的）国家公路网，国道
these paths are part of the Queen's highway and those who obstruct them are breaking the law
Example sentencesExamples
The emanations of the state will be warned that I am no longer allowed on the Queen's highway, and any breach of the ban will be an imprisonable offence.
People who have blocked roads (for example) deprive other members of the public of their democratic right to have free access to the Queen's highway.
I never want to be commanded, by any emanation of the British state, to produce evidence of my identity, when I am doing nothing more than amble down the Queen's highway, and breathing God's fresh air.
The residents have paid for these roads through taxes for the cars and it is after all the Queen's highway.
Then we look at the twaddle they claim for blocking the Queen's highway: their children can't get to a community centre.