Tennessee Senate Bill SB0954

Tennessee 2025-2026 Regular Session

• Introduced: 2/5/25
• Engrossed: 3/17/25
• Enrolled: 3/25/25
• Passed: 4/3/25
• Chaptered: 4/8/25

Caption

AN ACT to amend Tennessee Code Annotated, Title 55, Chapter 8, relative to speed limits.

Summary

SB0954 amends Tennessee’s traffic code to give county governments clearer authority to set lower speed limits on county-maintained roads. The bill states that a county legislative body may prescribe lower speed limits it deems appropriate, provided it posts proper signs and traffic signals. It also allows a county legislative body to delegate that authority by resolution to the chief administrative officer of the county highway department, but only if the department employs an engineer capable of conducting engineering and traffic investigations and ensures those investigations are completed. The bill further requires that any engineering and traffic investigations used to establish county speed limits be performed according to established traffic engineering practices and in conformity with the Manual on Uniform Traffic Control Devices (MUTCD) and state supplemental guidelines. Those investigations must be documented and the documentation retained by the jurisdiction that performed or sponsored them. The bill also clarifies that in counties with a commission form of government, the board of commissioners has the same authority described in the section. Its impact is to update Tennessee Code Annotated, Section 55-8-153, by expanding and clarifying local control over speed limits on county-maintained roads while imposing procedural safeguards for how those limits are studied and adopted. Counties that want to lower speed limits will need to follow engineering-based standards and maintain records, which may affect county highway departments, local legislative bodies, and traffic engineering staff. The law does not broadly change state-set speed limits, but it does formalize county discretion in a specific area of roadway management. The bill appears to have had strong support and little visible opposition. It was recommended for passage by the Transportation and Safety Committee by a 9-0 vote and then adopted on the Senate floor by a 32-0 vote. No committee transcript concerns are provided, and the unanimous votes suggest the measure was viewed as a practical local-government and roadway-safety bill rather than a controversial policy change. The main point of possible contention, based on the text, would be the balance between local flexibility and technical oversight: counties gain authority to lower speed limits, but only through engineering and traffic investigations that meet MUTCD and state guideline standards. Another potential issue is delegation of authority to highway department leadership, which could raise questions about accountability, although the bill limits that delegation to departments with qualified engineering capacity.

Impact

The bill amends Tennessee Code Annotated Title 55, Chapter 8, Section 55-8-153 to clarify county authority over speed limits on county-maintained roads. It authorizes county legislative bodies, and in commission-form counties the board of commissioners, to set lower speed limits and to delegate that authority to county highway department leadership under specified engineering qualifications. It also imposes documentation and standards requirements for traffic studies, affecting county governments, highway departments, and traffic engineering practices.

Sentiment

The bill’s sentiment appears strongly favorable and noncontroversial. It passed the Transportation and Safety Committee unanimously and then received unanimous approval on the Senate floor, indicating broad bipartisan support for the measure. The available record does not show organized opposition or significant debate.

Contention

The main substantive issue is not whether counties may lower speed limits, but how that authority is exercised. Supporters would likely favor local discretion and roadway safety management, while any concerns would center on ensuring speed-limit changes are backed by proper engineering studies, MUTCD compliance, and retained documentation. A secondary point is the delegation of authority to county highway department administrators, which could raise questions about local accountability and consistency across counties.