Blocking a road so as to prevent vehicles from being driven along it constitutes interference with the 'operation' of a vehicle under s 46(1A)(b) of the Forestry Act 1920 (Tas); the provision is not limited to physical interference with the vehicle itself. The definition of 'forest operations' in s 4(1) extends to related transport operations, including the transporting of forestry workers along an access road to a harvesting area, even where the transport occurs several kilometres from the harvesting site. A police officer is acting in the execution of duty when preventing a person from obstructing a highway, regardless of the officer's intention to subsequently restrict traffic to authorised vehicles.
The full text is available to signed-in members, including the 1 later case that cites this judgment.