“Declared gross weight” means the maximum gross weight at which the vehicle or combination of vehicles will be operated, except the term does not include the weight of:
1. Another vehicle which is being carried or towed by a tow car;
2. Implements of husbandry;
3. A trailer or other towed vehicle which is not used for a commercial enterprise;
4. Towable tools or equipment, as that term is defined in NRS 484D.055; or
5. The load on a farm vehicle which has an unladen weight of 10,000 pounds or more.