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post #11 of 58 (permalink) Old 26th April 2007
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Tinted windows

The plastics used in tinting act as a one-way light transference medium and on the rear and rear passenger windows can be as dark as you like when viewed from the outside but must have a least 70% light transference when viewed from the inside. In other words you should be able to see clearly out at night. As with any other product there are varying degres of quality and not all will comply with the 70% light transference - so beware before you buy. If you have a light meter you take a reading on the surface outside the galss and then a reading inside and work out the differing percentage. It must also be remembered that the product must be applied in strict accordance with the manufacturers instructions and ideally checked afterwards.
As far as the front screen and front passenger and drivers side windows they must have a close as posssible to 100% light transference in order to allow those in front of the vehicle to be identified by someone from the outside or photographed by traffic or security camera.
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post #12 of 58 (permalink) Old 26th April 2007
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I could have this wrong, but I'm sure that I recall reading that the police already had powers to stop you and hand out a fine just because they believed your windows to be too darkly tinted. Of course, I'm sure you could dispute the ticket if you were later able to prove that your tints were legal.

If it's now the responsiblity of the police to do the test and only issue a ticket if the tints fail, then surely that's generally a good thing for people with tinted windows. Well as long as they don't treat the tester like a new toy, and start targetting anyone who has anything other than standard tints.

I've been in two minds about tinting mine for a while. I'm sick of the summer sun blinding the little-un in the back, and even the factory fitted sunscreens on the Lag don't block out the whole window. What's more, I hate driving with the rear screens up, as I find that the OSR one creates a very nasty blind spot when changing lanes on the motorway. In fact, I came pretty close to side-swiping a Vectra the other day because the damned thing was up. I just didn't see him until the last minute, even though I'd checked over my shoulder as well as looking in my mirrors.

If they're getting touchy about tints, then maybe they should ban the blinds. The mesh nature of the blind means that, while they might be reasonably transparent when viewed at 90 degrees, they actually block most of the light when viewed at an angle (i.e. from the driver's seat.)

Though a part of me wonders what the big deal is about tinted back windows. If you're driving a car-derrived van, your rear windows transmit 0% of the light because they're made out of metal. Surely choosing to even totally black out the rear windows on a car makes it no less safe than a van.
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post #13 of 58 (permalink) Old 26th April 2007
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Very valid point Horatio, Especially regarding vans,etc. I know of a situation where a Ford Escort car was presented for MOT without the driver's mirror (it fell off the screen) and it was rejected on the grounds that the vehicle did not meet the vehicle standard as when approved by the Dept of Transport, or relevant EU guidleines, etc. It appears you cannot reduce the safety aspects of an approved vehicle. I appreciate the standards in Northern Ireland are more onerous than in the UK mainland but as a matter of interest has anyone had a car fail its MOT because the rear view was obscured or the mirror was missing.
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post #14 of 58 (permalink) Old 26th April 2007
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Thumbs up The Law on Window tinting

The legal aspects of window tinting

The Law On Window Tinting | Road Tests, Auto Features

Another article.

Window Tinting Laws


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post #15 of 58 (permalink) Old 26th April 2007
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those tell completly different things
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