Interstate speed limits — Tennessee Permit Test

The maximum speed set by Tennessee law for interstate highways is 70 mph.

Even on the fastest roads there is a ceiling. Above 70 mph, stopping distances grow longer than most drivers expect.

The maximum speed set by Tennessee law for interstate highways is 70 m.p.h.

The maximum interstate speed limit should be driven only in ideal driving conditions.

70 mph assumes a dry road, good light and space around you. In rain or heavy traffic, that speed leaves no margin.

The maximum limit should be driven only in ideal driving conditions.

In the more congested urban or metropolitan areas of Tennessee interstates, the speed limit is typically 55 mph.

City interstates have close exits and lots of merging. A lower limit gives drivers time to react to cars cutting in.

In the more congested urban or metropolitan areas of Tennessee interstates, the limit is typically 55 m.p.h.

Unless congestion prevents it, it is unlawful to drive less than 55 mph in the leftmost lane of any interstate highway.

The left lane is for faster traffic and passing. A slow car there forces others to pass on the right.

NOTE: It is unlawful for any person to drive a vehicle less than 55 m.p.h. in the left most lane of any Interstate highway, unless traffic congestion and flow prevent safe driving at such speed.

On interstates, the minimum speed limit in the right lane or lanes is 45 mph under normal driving conditions.

A car crawling on the interstate is like a wall to the trucks behind it. Keeping at least the minimum stops them running up on you.

On the interstates, the minimum speed limit in the right lane(s) is 45 m.p.h., and under normal driving conditions, all vehicles must travel at least this fast so they are not a hazard to other drivers.

If the minimum posted speed limit is too fast for you, use another road.

A driver who is nervous at highway speed and drives slower is a hazard to everyone. A slower road is the safer choice.

If the minimum posted speed limit is too fast for you, use another road.

What is the maximum speed set by Tennessee law for interstate highways?

70 mph. Even on the fastest roads there is a ceiling. Above 70 mph, stopping distances grow longer than most drivers expect. Tennessee Comprehensive Driver License Manual, p.47: “The maximum speed set by Tennessee law for interstate highways is 70 m.p.h.”