This might be a good one for Steve DeGaetano or anyone else with pertinent knowledge.
Every night I've been to DL 'til closing, shortly after closing I see the Monorail Tractor making a quick run around the monorail track.
What exactly are they doing? I know they use them to tow Monorails that have gone 101 back to the roundhouse, to trim vegetation along the Monorail path and to do track maintenance, but what's the purpose of that end-of-night run? Are they just giving the track a visual once-over to make sure the track is OK and the Monorail didn't break and leave behind any pieces? I'd imagine it's something like that but I'm just curious from an operational standpoint.