To minimize runway incursions or CMAVs crossing, which location is specified as the crossing point?

Answer: A — Taxiway Alpha or the approach end of the active runway

The key idea is: cross the active runway only at designated crossing points where ATC can safely manage traffic and you have good visibility of what’s happening on the runway. The specified crossing location—Taxiway Alpha at the edge of the runway, or right at the approach end of the active runway—provides those controls and visibility. Crossing here means you approach a point where aircraft traffic is expected to be seen and coordinated, and ATC can authorize the cross, reducing the chance of a ground vehicle entering the runway at the wrong time. Crossing at the runway centerline, or at other taxiways or midpoints that aren’t designated crossing points, would place you directly in the path of landing or departing aircraft and can happen without proper clearance or visibility. That’s why the designated crossing points are the safe, recommended locations.