Traffic Safety - As enacted, defines "fully enclosed" as having side panels, a roll bar or roof, and a windshield with regard to crash helmet requirements not applying to autocycles that are fully enclosed. - Amends TCA Title 55.

SB 1148 amends Tennessee Code Annotated, Section 55-10-428(c), by changing the effective date of a transportation provision from December 1, 2025, to February 1, 2026. This adjustment delays implementation by two months without altering the law's requirements or substance. The bill directly affects the timeline for when the provision becomes enforceable in Tennessee's transportation regulations. It is a technical amendment focused solely on adjusting the effective date, with no changes to existing rules or exemptions.