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gilarion



Member Since: 05 Dec 2013
Location: Wales
Posts: 5115

Wales 2007 Defender 90 Other CSW Trident Green
Towing mirrors and the law explained
I recently posted an article about Grand Aero towing Mirrors and several of the replies in that thread questioned the law on towing mirrors or were confused or were slightly ignorant of it.

So here is an explanation of towing mirror law, but remember if you do not comply with this law on mirrors while towing you can get 3 penalty points and be fined a £1000.00.

The law states that while towing a trailer you must have an adequate view of the road behind you. If your caravan or trailer is wider than the rear of the towing vehicle, you must fit suitable towing mirrors.
The law requires you to be able to see when sitting in the driving position of your towing vehicle for a distance of 20 metres to the rear, and from that point 4 metres out into the carriageway on the offside, and along the kerb to the nearside – a large area!

In other words the law specifies that you need to be able to see clearly an area that is four metres wide from both sides of your trailer or caravan at a distance of 20 metres behind the driver. This is quite a large area and can be partly obscured by the corners of your caravan, and if you rely on normal Defender mirrors even pushed out these will not give the required by law rear field of view. Some may think that they are OK because they can adjust their door mirrors so that they have some rearward vision but what they see is simply not good enough



Plus without towing mirrors, it is quite easy to miss a cyclist or a motorcyclist, and you are also much less likely to spot a car moving out from behind to overtake. Plus you cannot see your wheels when manoeuvring or turning at sharp junctions.

This is the view in your mirrors that complies with the law


Click image to enlarge



As I have said towing without proper mirrors can result in a police prosecution in the form of three points on your license and a fine of up to £1,000. And believe me when I say I have seen many Land Rovers towing large trailers and caravans pulled over by the police and VOSA to check your mirrors. For those who like Welsh Mountains and narrow boats have a look at my videos and photos at..

http://www.youtube.com/user/conwy1
Post #521132 5th Apr 2016 12:33pm
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ARC99



Member Since: 19 Feb 2013
Location: North Yorkshire
Posts: 1831

United Kingdom 2008 Defender 110 Puma 2.4 USW Cairns Blue
If I may just add a useful link from the Caravan Club technical Office issued in 2009.

http://www.caravanclub.co.uk/media/1022769...ors-mo.pdf

If anyone does use the link go to the section with the legislation and click on "the latest regulation" and go to page 29 and read on. Don't make old people mad.
We don't like being old in the first place,
so it doesn't take much to Censored us off.

Richard
Post #521142 5th Apr 2016 1:29pm
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lambert.the.farmer



Member Since: 11 Apr 2012
Location: harrogate
Posts: 2006

England 1998 Defender 90 300 Tdi PU Rutland Red
Thanks for the links to the source legislation. I will check that I comply. Rhubarb and custard let fly with their secret weapon.
Post #521177 5th Apr 2016 2:51pm
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Cupboard



Member Since: 21 Mar 2014
Location: Suffolk
Posts: 2971

United Kingdom 2011 Defender 110 Puma 2.4 HT Corris Grey
Sorry, this is quite a long post. The key thing is that I don't thing the CC article is that useful and there's a picture down the bottom from the law-bit.

I'm not sure the Caravan Club article actually clarifies the law though, and I did read through all of that the other day. It starts off by saying that mirrors need to meed various regulations. Things like you need two, they have to be E marked, they can't stick out further than 20cm, they have to be attached properly... blah.

I don't think there is any law beyond "adequate" and I think the Caravan Club say that too, because:

Quote:
A key question is exactly what constitutes an ‘adequate’ view. In all of the legislation regarding mirrors, the requirements are defined in an extremely complicated manner. Rather than giving a confusing (if technically) exact definition, a good approximation would be to say that for a typical car-caravan combination, you need to be able to see a zone at least 4-5m wider than the caravan at a distance of about 10-20m behind the caravan. If you really want to see the full detail of the legislative requirements, see the section below on ‘Legislation’ for how to find this.


So, the further documentation cited. Fun fun fun Big Cry


71/127 EEC wrote:

3.5.
Field of vision
3.5.1.
General
The fields of vision defined below must be established using binocular vision, the observer's eyes being at the ‘driver's ocular points’ as defined in item 1.7 above. The fields of vision shall be determined when the vehicle is empty except for one observer, and must be established through windows which have a total light transmission factor of more than 70 %.

3.5.2.
Interior rear-view mirror
The field of vision must be such that the driver can see at least a 20-m-wide plane and horizontal portion of the road centred on the vertical longitudinal median of the vehicle, said portion stretching from the horizon to 60m behind the rear of the vehicle (Figure 3).

3.5.3.
Left-hand exterior rear-view mirror
The field of vision must be such that the driver can see at least a 2·50-m-wide plane and horizontal portion of the road, said portion being bounded on the right by the plane which is parallel to the vertical longitudinal median of the vehicle and passes through the leftmost point of the overall width of the vehicle, said portion
stretching from the horizon to 10m behind the ocular points of the driver (Figure 4).
3.5.4.
Right-hand exterior rear-view mirror
The field of vision must be such that the driver can see at least a 3·50-m-wide plane and horizontal portion of the road, said portion being bounded on the left by the plane which is parallel to the vertical longitudinal median of the vehicle and passes through the rightmost point of the overall width of the vehicle, said portion
stretching from the horizon to 30m behind the ocular points of the driver.

In addition, the road must be visible to the driver, over a width of 0·75 m, from a point 4 m, behind the vertical plane passing through the ocular points of the driver (Figure 4).


I love that eyes are called "ocular points" Shocked

Then there's a load of stuff about type approval, dimensions, how to determine where the ocular points are, nothing about trailers.


Click image to enlarge


79/795 EEC reads the same. Again nothing about trailers and lots about "what's a mirror?"

86/562 EEC: Blah blah type approval blah

88/321 EEC: Refers to mirrors, type approval and larger vehicles. Not relevant to this discussion, nothing to do with trailers, field of view, anything really.

2003/97 EC: Starts by saying "we've defined what you need for vehicles, but have realised that trailers change things a bit..." "also there are things that aren't mirrors too".

Class N1 and M1 vehicles (Defenders, light commercials, cars) have to have an interior rear view mirror (Class 1) unless it would be pointless and you can't see anything backwards (like you have a bulkhead) and two small Class 3 exterior mirrors, one on either side, unless you fit the larger Class 2 mirrors.

N1 is the same:



Click image to enlarge



After telling some so more things about how hard to hit the mirror to test it, they have some updated pictures and descriptions:

Quote:
Main exterior rear-view mirrors Class III
5.3.1. Exterior rear-view mirror on the driver’s side
The field of vision must be such that the driver can see at least a 4 m wide, flat, horizontal portion of the road, which is bounded by a plane parallel to the median longitudinal vertical plane and passing through the outermost point of the vehicle on the driver’s side of the vehicle and extends from 20 m behind the driver’s ocular points to the horizon (see Figure Cool.

In addition, the road must be visible to the driver over a width of 1 m, which is bounded by a plane parallel to the median longitudinal vertical plane and passing through the outermost point of the vehicle starting from a point 4 m behind the vertical plane passing through the driver’s ocular points.

5.3.2. Exterior rear-view mirror on the passenger’s side The field of vision must be such that the driver can see at least a 4 m wide flat, horizontal portion of the road which is bounded by a plane parallel to the median longitudinal vertical plane passing through the outermost point of the vehicle on the passenger’s side and which extends from 20 m behind the driver’s ocular points to the horizon (see Figure Cool.

In addition, the road must be visible to the driver over a width of 1 m which is bounded by a plane which is parallel to the median longitudinal vertical plane and passing through the outermost point of the vehicle starting from a point 4 m behind the vertical plane passing through the driver’s ocular points



Click image to enlarge


Right.

2005/27 EC: pretty quick read, basically there is some overlap between commercial vehicle classes, and where a smaller one is closely related to a bigger one and could reasonably be expected to have bigger mirrors, fit bigger mirrors. Not relevant to N1 class though, it's about the N2 (3.5-7.5t) and N3 (7.5t+) boundary.

ECE Regulation 46 and latest amendment: Don't really add anything.

Nothing about trailers in any of those documents, only about the towing vehicle. I think if you can see the sides of your trailer you're fine in the eyes of the law. Obviously sometimes bigger mirrors might help so long as they don't fall foul of another law - there are lots of regulations are how wobbly they can be at speed, how to hit them with a hammer and how far they can stick out.

IMO so long as you can see the sides of your trailer you're fine. I'm not sure if the stock Defender interior mirror actually meets the regs too.

Sigh.
Post #521295 5th Apr 2016 7:28pm
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ARC99



Member Since: 19 Feb 2013
Location: North Yorkshire
Posts: 1831

United Kingdom 2008 Defender 110 Puma 2.4 USW Cairns Blue
I will be brief.

With the standard mirrors supplied on a Land Rover Defender do not in my opinion give a correct rear view of Caravan/trailer if the Caravan/Trailer is wider than the Defender. Caravans are now 7' 4" wide if my memory is correct this is wider than the Defender. If you alter the angle of the wing mirrors they do not give the correct visibility to the rear.

I have in the past, when I worked for a living ,used the regs to prosecute drivers when towing a caravan and a trailer. I would not like anyone from this family of Defender drivers to fall fowl of the law, just be safe. Don't make old people mad.
We don't like being old in the first place,
so it doesn't take much to Censored us off.

Richard
Post #521318 5th Apr 2016 8:23pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17610

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
IMHO Defender mirrors work fine if you fit them on the extended arms used on the n/s of a military Wolf. Keep them in (legal) if not towing, click them out when towing.

Very simple if you tow often and don't want to keep fitting and removing tin tent mirrors.
Post #521356 5th Apr 2016 9:26pm
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lambert.the.farmer



Member Since: 11 Apr 2012
Location: harrogate
Posts: 2006

England 1998 Defender 90 300 Tdi PU Rutland Red
I have just measured my biggest trailer and it is just short of an inch and 3/4 narrower than the extent of the mirrors on each side meaning that my factory mirrors correctly adjusted are sufficient to satisfy the requirements as I understand them, that is I can see the rear corners of the trailer and a swathe of road to either side. Rhubarb and custard let fly with their secret weapon.
Post #521450 6th Apr 2016 9:47am
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dave18



Member Since: 11 Jul 2015
Location: Gorleston, Great Yarmouth
Posts: 497

United Kingdom 1984 Defender 110 300 Tdi CSW Portofino Red
Yay more fun from the house of fun !!!! Don't you love our laws and regs !!!!!

Looks a bit of a mine field. But one thing I noticed is that the first picture shown with the wing mirrior extensions I think if you angled them so the 2nd row door handle was where the 1st door handle would normally be then you would have the field view!! Then of course it depends if you have stock or aftermarket mirrors flat or convex, Stock arms or Wolf Arms. Persoannly think best bet is see what you can see with your current mirriors and if you cant see then fit extra, Remember the defender was always designed as a tow vehicle and that is suposidly one of the reasons why the arms have two positions in for normal and out for towing.
Post #521473 6th Apr 2016 11:06am
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gilarion



Member Since: 05 Dec 2013
Location: Wales
Posts: 5115

Wales 2007 Defender 90 Other CSW Trident Green
Lambert.the.farmer.
The only way to truly tell if your Defender door mirrors meet the requirements of the law, is to park on a straight road with the trailer attached and then get someone to stand twenty metres behind level with the edge of the trailer, and then pace four meters to the side level with the rear edge if you can see the person in your mirrors from the driving seat is all is well, you may find you can from the driver’s side but not from the passenger’s side. For those who like Welsh Mountains and narrow boats have a look at my videos and photos at..

http://www.youtube.com/user/conwy1
Post #521475 6th Apr 2016 11:09am
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WarPig



Member Since: 04 Dec 2009
Location: Sheffield
Posts: 1748

England 1996 Defender 110 300 Tdi USW Bonatti Grey
Re: Towing mirrors and the law explained
gilarion wrote:

This is the view in your mirrors that complies with the law


Click image to enlarge


Ooooh, thats my photo, I must now be famous Smile

Also, its good if you are able to see the actual sides of your caravan/trailer.
Post #522365 8th Apr 2016 11:14pm
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