Final answer:
Studded snow tires can be used in NJ between November 15th and April 1st each year when there is snow or ice on the roads.
Step-by-step explanation:
In New Jersey, studded snow tires are legally allowed on vehicles between November 15th and April 1st each year. It is important to note that studded tires can only be used when there is snow or ice on the roads, and they should not be used if road conditions are clear. Using studded tires during prohibited times can result in fines and penalties.