Traffic Safety - As introduced, authorizes a law enforcement officer to seize and impound a motor vehicle in any county or municipality that has passed a resolution or ordinance authorizing the seizure and impoundment of a motor vehicle observed by law enforcement to have been used to commit the offense of drag racing or to flee after commission of the offense of drag racing subject to certain restrictions. - Amends TCA Title 6; Title 7; Title 16; Title 40 and Title 55, Chapter 10, Part 5.

SB 1647 allows law enforcement in Tennessee counties or municipalities that have adopted specific resolutions to seize and impound vehicles used for drag racing or to flee after such racing. It requires local governments to set a minimum 120-hour impound period before vehicle release (with fees) and establish a process for owners to challenge the seizure. The bill directly affects vehicle owners in participating jurisdictions by adding this enforcement mechanism, while clarifying that "owner" includes title holders or registered agents. It does not change drag racing laws but standardizes seizure procedures across the state.