Elsewhere, there may be multiple overlapping police agencies patrolling for violations of state or federal driving regulations.
There is also a "Uniform Vehicle Code" which has been proposed by a private, non-profit group, based upon input by its members.
Similarly, most states have adopted relevant standards for signs and signals, based upon the Manual on Uniform Traffic Control Devices from the U.S. Department of Transportation.
Many federal departments have also adopted their own traffic code for enforcement on their respective reservations (e.g., national parks, military bases).
Road, driving and traffic regulations are the subject to specific codification of the law in countries such as: In Morocco, the law loi n°52-05 portant code de la route deals with a new traffic code, approved on 14 January 2009[4] and adopted on 11 February 2010 (26 safar 1431).