Following trucks — Connecticut Permit Test

Following trucks on the Connecticut permit test — 4 rules, each with the reason behind it and a question on it while it is fresh.

The rules

Never follow a truck at a time interval of less than three seconds.

Behind a trailer you cannot see the road at all, so the gap is the only warning you are going to get.

Never follow a truck at a time interval of less than three seconds.

Connecticut Driver's Manual, p.20

If you follow a truck closely you are driving blind: you cannot see around it and the driver cannot see you in the mirrors.

Both halves of the problem arrive together, so there is nobody left watching the space between you.

If you follow a truck closely, you are driving blind.

Connecticut Driver's Manual, p.20

Never use your high beams when following a truck at night, because the glare in the large side mirrors can blind the driver.

A truck's mirrors are big and angled at the driver's face. Your high beams arrive there like a flashbulb.

Never use your high beams when following a truck at night. The glare in the large side mirrors can blind the truck driver.

Connecticut Driver's Manual, p.20

Avoid stopping too close behind a truck on an upgrade, because the truck could roll back as it starts up.

A heavy vehicle rolls back on a hill before it pulls away, and your hood is what it rolls into.

Avoid stopping too close behind a truck on an upgrade. If the truck rolls back when starting up, your vehicle could be damaged.

Connecticut Driver's Manual, p.20

On the test

What is the minimum following interval behind a truck?

Three seconds. Behind a trailer you cannot see the road at all, so the gap is the only warning you are going to get. Connecticut Driver's Manual, p.20: “Never follow a truck at a time interval of less than three seconds.”

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.

What it costs

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Where these come from

Every rule here is checked against Connecticut Driver's Manual, published by the Connecticut Department of Motor Vehicles, and against the state code itself. Last checked 2026-09-16.