Bailey ADVANCE 2019 Owner's Manual page 14

10
Train weight
UK
USB
V (unit of measurement)
VIN
The gross train weight is the weight of the fully-loaded
motorhome plus fully-loaded trailer and must not be exceeded.
If your VIN plate doesn't list a train weight, you should not use
your vehicle for towing.
United Kingdom
Universal Serial Bus type of connector
Voltage - the difference in electric potential energy between
two points per unit electric charge
Vehicle Identification Number