Free TN DMV Traffic Laws Questions and Answers — Questions and Answers

Question 1: What is the legal blood alcohol concentration (BAC) limit for drivers aged 21 and over in Tennessee?

0.02%
0.04%
0.08% (Correct answer)
0.10%

Correct answer: 0.08%

In Tennessee, as in most U.S. states, the legal blood alcohol concentration (BAC) limit for drivers aged 21 and over is 0.08%. Driving with a BAC at or above this limit is considered driving under the influence (DUI). This limit is established to prevent impaired driving and enhance road safety for everyone.

Question 2: When approaching a school bus that is stopped with its red lights flashing on a two-lane road, what must a driver do?

Pass the bus cautiously
Stop and wait until the lights stop flashing (Correct answer)
Slow down but continue driving
Honk to alert the bus driver

Correct answer: Stop and wait until the lights stop flashing

When a school bus stops on a two-lane road with its red lights flashing, it signals that children are entering or exiting. Drivers in both directions are legally required to stop and remain stopped until the red lights are turned off and the bus begins to move. This law is paramount for ensuring the safety of children crossing the road.

Question 3: In Tennessee, what is the speed limit in a residential area unless otherwise posted?

20 mph
35 mph
30 mph
25 mph (Correct answer)

Correct answer: 25 mph

In Tennessee, the default speed limit in a residential area is 25 mph, unless a different speed is clearly posted. This lower speed limit is set to increase safety for pedestrians, children, and other residents in areas with higher population density. Drivers should always be attentive to posted signs, but this is the general rule.

Question 4: How many feet before making a turn must a driver signal their intention in Tennessee?

50 feet
75 feet
100 feet (Correct answer)
150 feet

Correct answer: 100 feet

Tennessee law mandates that drivers signal their intention to turn or change lanes at least 100 feet before executing the maneuver. This requirement provides other drivers with ample warning, allowing them to anticipate and react safely to the turning vehicle. Early signaling is a fundamental practice for preventing collisions and maintaining smooth traffic flow.

Question 5: What is the consequence for a first-time offense of driving without insurance in Tennessee?

A warning
Suspension of driver's license (Correct answer)
A small fine
Mandatory community service

Correct answer: Suspension of driver's license

In Tennessee, driving without valid automobile insurance is a serious violation of state law. For a first-time offense, the primary consequence is typically the suspension of the driver's license. This penalty underscores the state's commitment to ensuring all drivers are financially responsible for potential accidents.

Free TN DMV Traffic Laws Questions and Answers

What is the legal blood alcohol concentration (BAC) limit for drivers aged 21 and over in Tennessee?

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tn.gov — Fees, renewal, score validity, test delivery, eligibility, exam format, passing score, time limit · verified Oct 2026