The speed limit on base is 25 mph unless otherwise posted. Speed limits are strictly enforced by radar. Please note, radar detectors are illegal on federal property. Everyone — military and civilians — must wear seat belts when operating or riding in a vehicle on the joint base. New Jersey state law also requires properly-installed children’s car seats if transporting children eight years of age and under or fewer than 80 pounds. As a reminder, JB MDL is a hands-free installation.