Don’t know for certain about ABQ/NM but I bet it’s like here where one of the prohibited by law locations for concealed carry is local mass transit. Just dumb...
Correction: common carrier passenger transport is NOT one of the prohibited-by-law CCW locations here. However, the local transit authority does post the buses with the gun-buster decals. And, while I was on handgunlaw.us, I did find out NM does make carry on a public bus a misdemeanor.