I could not find any laws limiting the number of passengers for a 16 year old driver in Arizona. AnswerParty on!
Traffic on roads may consist of pedestrians, ridden or herded animals, vehicles, streetcars and other conveyances, either singly or together, while using the public way for purposes of travel. Traffic laws are the laws which govern traffic and regulate vehicles, while rules of the road are both the laws and the informal rules that may have developed over time to facilitate the orderly and timely flow of traffic.
Organized traffic generally has well-established priorities, lanes, right-of-way, and traffic control at intersections.
The New Zealand driver's licence system is a graduated system, which has been in place (with modifications, such as the L-plate requirement) since 1987. It consists of three phases for a car licence, each with varying levels of conditions.
A New Zealand driver's licence allows the holder to drive a moped, some agricultural vehicles and all-terrain vehicles as well as a car, however, motorbikes and heavy vehicles require separate licences. Upon passing the respective test for each stage of the system, the successful applicant is given a temporary paper licence to begin driving immediately while their permanent licence is printed and sent to them by post. The permanent licence contains a unique identifying number, date of birth and photograph of the holder. Apart from passports and a special-purpose 18+ card, a photo driver's licence is the only legal form of ID for buying alcohol, tobacco and fireworks in New Zealand.]citation needed[ Disaster Accident