What is the correct definition of a "light vehicle"?

What is the correct definition of a "light vehicle"?

1. A vehicle with a total maximum weight not exceeding 3.5 tons.
2. A vehicle with a capacity of 10 to 20 passengers, excluding the driver.
3. A vehicle with a capacity of 10 to 20 passengers, including the driver.

Correct answer

A vehicle with a total maximum weight not exceeding 3.5 tons.

This is the correct answer for the Cambodian driving theory test. Questions are drawn from the official Ministry of Public Works and Transport sign library and road rules.