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Tennessee driving lesson · Turning, Passing & Lane Use

Roundabouts & U-turns

A 3-minute lesson from the Tennessee course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.

Read time
3 minutes
Course unit
Turning, Passing & Lane Use
Checkpoint questions
6
Source pages
72, 73

Roundabouts slow traffic and cut down on serious crashes. Many Tennessee towns have an older form called the town square. U-turns, meanwhile, are banned in many places because they put you across traffic where others can't see you coming.

Roundabout

An intersection where traffic circulates around a central island. Used to slow speeds, reduce crashes and keep commuters off neighborhood streets.

Handbook p. 72 ↗
Roundabout diagram
Roundabout with splitter islands and yield signs

Driving a roundabout

  • Always travel to the right — counterclockwise
  • Approach to the right of the splitter island
  • Yield to vehicles already circling; enter at a gap
  • Once inside, don't stop unless signs, signals or an officer say so
  • In a multi-lane roundabout, don't pass other vehicles
  • Be ready to yield to vehicles leaving from the inside lane
  • Signal right to exit and yield to pedestrians in the crosswalk
Handbook p. 73 ↗
15–25 mph

Usual posted speed inside a roundabout

Handbook p. 73 ↗

Know the rule

Missed your street? Just go around again and exit.

Handbook p. 73 ↗

U-turn

A turn in one smooth U-shaped motion that leaves you traveling the opposite direction.

Handbook p. 73 ↗

You may NOT make a U-turn:

  • At an intersection controlled by a traffic light or police officer
  • Where you can't see traffic 500 feet away in each direction
  • Where signs or markings prohibit it
  • Between intersections in a city — drive around the block
  • At or near a curve or hill crest without 500 feet of view each way
  • On any interstate highway
Handbook p. 73 ↗
500 feet

Visibility needed in each direction for a legal U-turn

Handbook p. 73 ↗

Know the rule

Interstate emergency crossovers are only for emergency vehicles and highway maintenance crews. Using them to turn around, or cutting across the median, is illegal — drive on to the next exit.

Handbook p. 73 ↗

Know the rule

Some towns and cities ban U-turns on their streets — check with local police.

Handbook p. 73 ↗

Put it into practice

You miss your exit on I-65. Don't slow down, back up or use the grassy crossover. Continue to the next exit, get off, and re-enter going the other way.

Check your understanding

Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.

Inside a roundabout, traffic should always travel:
  1. To the left, in a clockwise direction
  2. Counter-clockwise, to the right
  3. In whichever direction is shortest
  4. In either direction if it is clear

Answer: Counter-clockwise, to the right

Traffic in a roundabout always travels to the right, in a counter-clockwise direction.

Handbook p. 73 ↗
When entering a roundabout, you should:
  1. Come to a full stop even if the roundabout is clear
  2. Enter as quickly as possible ahead of circulating traffic
  3. Yield to circulating traffic; enter at a gap
  4. Merge from the leftmost lane only

Answer: Yield to circulating traffic; enter at a gap

You must yield to circulating traffic and enter the roundabout only when there is a safe gap.

Handbook p. 73 ↗
You may NOT make a U-turn at a location where you cannot see approaching traffic clearly for at least:
  1. 100 feet in each direction
  2. 50 feet in each direction
  3. 1 mile in each direction
  4. 500 feet in each direction

Answer: 500 feet in each direction

U-turns are prohibited where you cannot see oncoming traffic clearly for at least 500 feet in each direction.

Handbook p. 73 ↗
Making a U-turn on an interstate highway in Tennessee is:
  1. Illegal
  2. Legal if no traffic is visible
  3. Legal only at emergency crossovers
  4. Legal only during daylight

Answer: Illegal

It is illegal in Tennessee for any driver to make a U-turn on an interstate highway.

Handbook p. 73 ↗
Emergency crossovers on the interstate median are reserved for:
  1. Any driver who missed their exit
  2. Emergency and maintenance vehicles only
  3. Drivers stuck in a traffic jam
  4. Tow trucks and buses only

Answer: Emergency and maintenance vehicles only

Emergency crossovers are strictly for emergency vehicles and highway maintenance crews, not for regular drivers to turn around.

Handbook p. 73 ↗
U-turns are prohibited at all of the following EXCEPT:
  1. An intersection controlled by a traffic light
  2. The crest of a hill where you cannot see 500 feet
  3. A rural road with 500 feet of view each way
  4. Between intersections within a city

Answer: A rural road with 500 feet of view each way

U-turns are banned at signal- or officer-controlled intersections, near curves or hill crests without 500 feet of view, between intersections in a city, and where signs prohibit them; a rural road with clear 500-foot views is not on that list.

Handbook p. 73 ↗
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