ASD,
We dont allow any vehicle movements in LVP's.
So how do you do runway inspections? How do you escort a/c that get lost in the fog? I don't know if you have surface movement radar, but if you do, how do you check out ghosts? How do you check out facilities that show a back-indication of a fault?
Our MATS Part II requires Airfield Ops to mount patrols to ensure that other aircraft and vehicles don't stray anywhere near the Localiser Sensitive Area and in fact we can be as busy on the airfield during LVPs as in Ops Normal. The restrictions are that we have to ask for specific routing instead of being able to freerange when driving closer than a given line to the LSA. Any driver that normally can freerange can ask for a specific route during LVPs.
We too have the 'LSA must be free of a/c and vehicles and landing clearance given at 2 miles' deal. This seems to be pretty standard, but there are interesting variations in some of hte other detail, such as the distance of an inbound when an outbound is over the Localizer aerial.
Another intersting point that cropped up a couple of years ago was the introduction of a Sensitive Area for the Glideslope. This has a curious shape and limits activities on an adjacent taxiway which we have to barrier off to prevent incursion.
Cheers,
TheOddOne