Final answer:
State traffic laws in Louisiana are governed by specific chapters in the Louisiana Revised Statutes related to motor vehicles and traffic regulation, enforced by state and local law enforcement within their jurisdictions.
Step-by-step explanation:
The subsection of the Louisiana Revised Statutes that governs traffic laws can be identified by reviewing the relevant chapters that pertain to motor vehicles and traffic regulation. While specific statutes were not provided in the reference information, typically, state traffic laws would be found under titles or sections related to transportation or public safety within the state's legal code. State and sometimes local governments regulate highway safety, and this would include traffic laws like those against cellphone use while driving. State police enforcement is applicable statewide, including traffic on highways, whereas local or county police have jurisdiction only in their specific region.
Furthermore, under the scope of the United States Constitution, specifically the interstate commerce clause (Section 8 Clause 3), Congress has the power to establish laws affecting interstate commerce, which can include transportation regulations that affect traffic laws on a national level. Although this does not directly dictate state traffic statutes, it can influence them, especially when federal funding or compliance with federal standards comes into play.