Detecting Parcel Boundaries in scripts

Does anyone know how to detect a parcel boundary ( such as a property boundary you are not allowed to enter) with a script? when an object or avatar runs into a wall of "Keep-out-red-lines", what event is triggered - Collision? Collision_start? Is there some know way to detect this sitation before a vehicle runs into it (which is most ungraceful, at best)?

Specific boundaries, no. You'd probably want to check around your object using llGetParcelFlags with some distance offset in order to detect a change in parcel flags indicating the approach of a parcel boundary.

This will probably do it - did not realize there was such a command - Duhh

Val