What is the definition of light commercial vehicle?

This varies by country. In New Zealand, a light commercial vehicle refers to a utility vehicle, van, or any other light (under 4500kg) vechicle that is not specifically designed for private passenger usage. SUV's are considered as passenger vehicles. In the US, as I understand at least, the light commercial defintition is not used, and instead, the two main categories used in official vehicle usage statistics are trucks and cars. In this case, SUV's, vans, and utility vehicles are considered trucks.