Air bag safety — Massachusetts Permit Test
Air bag safety on the Massachusetts permit test — 3 rules, each with the reason behind it and a question on it while it is fresh.
The rules
An air bag is made to work with safety belts, not instead of them, and only protects you in head-on crashes.
Front air bags do nothing in a side or rear impact, and nothing at all for an unbelted body already out of position.
Front air bags are only made for head-on crashes and do not protect you in crashes from the side or back.
You should move the driver's seat and the front passenger seat as far back from the dashboard as you can.
The air bag needs room to inflate before it reaches you. Sitting close puts your face where it is still accelerating.
You should move the driver's seat and front passenger seat as far back from the dashboard as you can.
Infants in back-facing child safety seats should never be in the front seat of a vehicle with a passenger-side air bag.
It is the same rule the restraint section gives, repeated because it is the one that kills children in cars that were otherwise driven safely.
Infants in back-facing child safety seats should never be in the front seat of a vehicle with a passenger-side air bag.
On the test
What are front air bags made for?
Head-on crashes, working together with safety belts. Front air bags do nothing in a side or rear impact, and nothing at all for an unbelted body already out of position. Massachusetts Driver's Manual, p.37: “Front air bags are only made for head-on crashes and do not protect you in crashes from the side or back.”
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 Massachusetts Driver's Manual, published by the Massachusetts Registry of Motor Vehicles, and against the state code itself. Last checked 2026-09-16.
- src/assets/drivers-manuals/MA.pdf (Massachusetts Driver's Manual, Revised April 2026, Massachusetts Registry of Motor Vehicles, retrieved 2026-09-14 from mass.gov)
- src/assets/drivers-manuals/MA.pages.txt (pdftotext -layout over that PDF; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SOURCES.json (sha256, folio offset 8, folioMarker, nonLawPages, signGalleryPages and the extraction flag, each with its measured basis)