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What are pretensioner seatbelts and are they better than normal seatbelts?

Got a motoring question or looking for some advice? We’re here to help.

Got a question? Need advice? Submit your queries to melanie@thejournal.ie.

THIS WEEK, A reader asks:

My car is fitted with a seatbelt pretension system and load limiters. What exactly do they do and are they more effective than seatbelts without these?

Belting up is the single most effective thing you can do to protect yourself in a crash. Fact. According to the Royal Society for the Prevention of Accidents (Rospa) Volvo’s three-point seatbelt design, created in 1959, has saved over one million lives worldwide.

Newspress Newspress

A pretensioner, around since the 1950s, is a device designed to make seatbelts even more effective by removing the slack from a seatbelt as soon as an accident is detected or if the system senses excessive seatbelt tension on the driver or passenger’s seatbelt.

On standard seatbelts the locking system stops the seatbelt from extending any farther, but a pretensioner actively pulls in on the belt.  This ‘pre’ tensioning of the belt pulls the wearer back firmly into their seat and into a better position to get the full protection of the front airbags. By reducing the movement of the body, it also reduces the risk of injury.

Load limiters are often installed to minimise seatbelt-inflicted injury by releasing a little more excess belt webbing.

You know that extra fold of fabric on your seatbelt? That is a load limiter – and the stitching on that fold is designed to rip and release the extra fabric when excess force is applied. More advanced load limiters use a torsion bar in the retractor mechanism.

But are they any safer than conventional seat belts?

Well, according to one US study, by the National Highway Traffic Safety Administration, they are better:

In passenger cars, CUVs, and minivans, a belted driver or right-front passenger has an estimated 12.8 percent lower fatality risk if the belt is equipped with a pretensioner

And a follow up study showed that

a combination of pretensioners and load limiters significantly reduces HIC, chest acceleration, and chest deflection scores on 35 mph frontal NCAP tests.

Want to know more about how a pretensioner and force limiter works? This video will explain more.

ToyotaNZ / YouTube

READ: How to destress and stay relaxed whilst driving >

READ: Dear Driver: Which is the safest seat in my MPV? >

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    Mute Celtic Eagle
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    Oct 1st 2022, 7:07 PM

    He forgot problem creators.. Which they are guilty

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    Mute Frank Cauldhame
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    Oct 1st 2022, 7:40 PM

    @Celtic Eagle: Sorry pal but going by MM’s personal theory YOU SIR are a problem exploiter because erm, there is no middle ground, but don’t you fret none because under those very terms you are also a problem solver

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    Mute Stephen Deegan
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    Oct 1st 2022, 8:54 PM

    @Frank Cauldhame: Too much free drink at the ard feis, there frank? Take it easy now, some of you might have to do an interview in the morning.

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    Mute Paul Byrne
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    Oct 1st 2022, 7:30 PM

    He bankrupted our country

    241
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    Mute Don Hogan
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    Oct 1st 2022, 7:46 PM

    @Paul Byrne: You obviously do not read newspapers or listen to TV or radio.net news. Ireland is not bankrupt. It has a 6 billion surplus this year. Guess you never heard of the Celtic Tiger and the bank bail out. Your lack of knowledge about economic matters is shameful.

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    Mute M Bowe
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    Oct 1st 2022, 7:51 PM

    @Don Hogan: convenient of you to have forgotten the € 60 odd Billion yet to be repaid for the bank bail out.

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    Mute Patricia O'Brien
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    Oct 1st 2022, 7:55 PM

    @Don Hogan: if we have 6 billion surplus, how come our housing, our homeless, healhcare, our elderly our carers i could go on, are in such dire need ? Answer me that?

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    Mute Donal Desmond
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    Oct 1st 2022, 7:56 PM

    @Don Hogan: Would that be the same bank bailout that Martin stated never happened.

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    Mute M Bowe
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    Oct 1st 2022, 8:21 PM

    @Paul Hedderman: false. The bail out loans were restructured under Noonan and spread out over 40 years. Which the next 2 generations are saddled with. The troika loans amounted to €67.5 billion. The Nama payments barely cover interest payments or non troika loans.

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    Mute Paul Linehan
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    Oct 1st 2022, 9:06 PM

    @Paul Hedderman: ’250+ billion debt to do with govt general mismanagement of finances over the years’…… Would you like to enlighten us as to who was in government for those years? No worries, we already know the culprits.

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    Mute Paul Hedderman
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    Oct 1st 2022, 9:36 PM

    @Paul Linehan: Yep, majority of isnt bailout which is the point.

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    Mute Paul Linehan
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    Oct 1st 2022, 9:47 PM

    @Paul Hedderman: But what parties mismanaged the country’s finances to give us a 250+billion deficit over the last 100 or so years?

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    Mute M Bowe
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    Oct 1st 2022, 7:35 PM

    The paragraph about 6000 houses and SF objections, with added caption that fact checkers previously found the claim misleading sums up the fake narrative of FF and Micheal Martin.
    How does false narratives solve anything????

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    Mute Paul Byrne
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    Oct 1st 2022, 7:29 PM

    What a muppet

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    Mute Dave Byrne
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    Oct 1st 2022, 7:37 PM

    No story still from the Journal about the laptop seized by the Gardai?

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    Mute Dearbhla O Reilly
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    Oct 1st 2022, 7:42 PM

    @Dave Byrne: which?

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    Mute Dave Byrne
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    Oct 1st 2022, 8:08 PM
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    Mute a politicians promise is as good as a lie
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    Oct 1st 2022, 7:12 PM

    That’s a very Binary definition Mr Martin.. I thought in this time of woke theology there would be many different kinds of political ideas and definitions of people rather than just 2

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    Mute Don Hogan
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    Oct 1st 2022, 7:42 PM

    @a politicians promise is as good as a lie: Woke theory is a pile of rubbish designed to let people off the hook for their own failings and mistakes.

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    Mute Michael Griffin
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    Oct 1st 2022, 11:54 PM

    Why is an English pension fund buying up properties and leasing them back to the government on a 20 year lease and still owning the property, while this government keep paying the bill.

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    Mute William Houlihan
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    Oct 1st 2022, 10:49 PM

    He conceded that homelessness was unacceptable, and still he has confidence in o’brien. Well holy God….

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    Mute Fintan O'Halloran
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    Oct 1st 2022, 7:09 PM

    Exploiting a business opportunity is not wrong Michael. Denis O’Brien serviced the need for water meters when it was required by government. The whole point of business is to exploit an opportunity. So such a statement is ludicrous

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    Mute Tom Kelly
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    Oct 1st 2022, 9:28 PM

    Problem solvers.. lol

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    Mute David Van-Standen
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    Oct 1st 2022, 11:13 PM

    Where exactly these alleged problem solving politicians?

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    Mute Verners Tess
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    Oct 1st 2022, 9:53 PM

    Why is it that politicians, who create our problems, are the same people to solve them?

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    Mute Rob Duggan
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    Oct 1st 2022, 7:47 PM

    Very true. He is doing an excellent job and is a steady mature leader in a time of paid actors.

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    Mute Tom Bombdadil
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    Oct 1st 2022, 10:00 PM

    When you think of FF:FG it always reminds me of only fools and horses, when trigger has had the same broom for years

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    Mute John Gaughan
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    Oct 1st 2022, 7:48 PM

    We are the best little country in Europe

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    Mute Will Roche
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    Oct 1st 2022, 8:47 PM

    Not sure Ukraine is regarded as a small nation.

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    Mute Christopher Byrne
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    Oct 2nd 2022, 8:13 AM

    FF like FG are irrelevant. They ill be both annihilated at the next election. The boomers who’ve blindly vited them in for the last 40yrs are on the way out. The youth see them for what they are.

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    Mute Liam OhArgadain
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    Oct 2nd 2022, 8:27 PM

    Leave it to the keyboard Warriors!

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