Thanks for regularizing these tags! But please note, in the United States, a "ton", or 2000 lbs, is actually a short ton, not a metric ton. So a weight limit of 10,000 lbs should be mapped maxweight=10000 lbs or maxweight=5 st, not maxweight=5 t as you've changed a few to here. See https://wiki.openstreetmap.org/wiki/Key:maxweight#United_States for tagging examples.