Traffic congestion habits — Tennessee Permit Test

Traffic congestion habits on the Tennessee permit test — 3 rules, each with the reason behind it and a question on it while it is fresh.

The rules

Rubbernecking, slowing down to look at crashes or anything unusual, is one of the worst causes of congestion.

Every driver who slows to stare forces the ones behind to brake, and the jam grows for miles.

Slowing down to look at crashes or virtually anything else out of the ordinary is one of the worst congestion offenders.

Tennessee Comprehensive Driver License Manual, p.72

Weaving in and out of interstate lanes produces virtually no improvement in travel time, slows traffic and causes many crashes.

The minutes you think you are saving are almost nothing, and each lane change is a chance to hit someone.

Unnecessary Lane Changes: Although it produces virtually NO improvement in arrival or travel times, many motorists insist on weaving in and out of interstate lanes, which at best, slows down all traffic and at worst, causes many crashes.

Tennessee Comprehensive Driver License Manual, p.72

Drivers who do not watch the fuel gauge or maintain their vehicles can cause congestion by running out of gas or stalling.

One stalled car in a lane can back up a whole interstate at rush hour.

Drivers who do not watch the fuel gauge or maintain their vehicles properly can cause traffic congestion.

Tennessee Comprehensive Driver License Manual, p.72

On the test

What is rubbernecking?

Slowing down to look at a crash. Every driver who slows to stare forces the ones behind to brake, and the jam grows for miles. Tennessee Comprehensive Driver License Manual, p.72: “Slowing down to look at crashes or virtually anything else out of the ordinary is one of the worst congestion offenders.”

How this works

Most practice tests hand you a bank of questions and leave the manual somewhere else. This one puts them together.

You read one law and the reason behind it, then answer a question on that law while it is still fresh. Get it right and you move on; get it wrong and you have found the gap while it is cheap to fix, not on the morning of the exam.

Learning one rule at a time, and proving it immediately, is what turns a manual you skimmed into something you actually know — and it makes studying feel like getting somewhere rather than like waiting to find out.

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Where these come from

Every rule here is checked against Tennessee Comprehensive Driver License Manual, published by the Tennessee Department of Safety and Homeland Security, and against the state code itself. Last checked 2026-10-03.