Rank: Super forum user 
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I'm not sure if anyone will be able to answer this question on the forum (not specifically H&S) but with the depth of knowledge and various fields of expertise I am hopeful.
Can anyone advise if there is a requirement for a traffic cone to have a hole in the top of it. Our supplier insists there is no standard that specifies the need but I seem to remember the hole becoming a requirement to prevent a vacuum forming when dropping the cones off the back of a truck. Any advice would be welcome.
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Rank: Super forum user 
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Since it would seem logical to have a top to prevent the cone bouncing about when dropped due to vacuum, why don't you simply order them with the hole?
Simples.
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Rank: Super forum user
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I have ordered and received the goods. My issue is that I have been supplied non-compliant cones and I don't know if I should be using them. In future I will make sure I source them from somewhere that includes the hole in top (I had made the error to assume they would be supplied that way in the first place). I should know better than to assume anything when it comes to suppliers.
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Rank: Guest 
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Why not drill some holes in the top of them, it should be an easy task as they are plastic.
Even a series of smaller holes like the top of a pepper pot would do.
Sean
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Rank: Forum user 
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Cones used on public roads in the UK should be tested and certified to the definitions, categories and classes of BS EN 13422:2004. The Standard contains all the technical requirements for Cones.
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Rank: Super forum user
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"I seem to remember the hole becoming a requirement to prevent a vacuum forming when dropping the cones off the back of a truck."
It doesn't sound likely that a vacuum would form??? i thought it would be mainly so poles could also be stuck through the top or for flashing lights. as daly has said have a look at the standard. I'll keep an eye out for a hole in the top next time I'm sat in road works
Phil
one thought might be a vacuum would form when they are being stacked on top of each other or when lifting one off from the other when they are stacked. But not likely when been dropped from the back of the truck.
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Rank: Forum user
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Rank: Super forum user
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PhilBeale wrote:one thought might be a vacuum would form when they are being stacked on top of each other or when lifting one off from the other when they are stacked. But not likely when been dropped from the back of the truck.
Apologies, this is what I meant, the cones are stacked on top of each other, and the guys have had difficulty seperating them when going to drop them into place. Thanks for all the feedback guys. Holmezy is that drawing from the BS EN 13422:2004 that Daly mentioned?
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Rank: Super forum user 
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These Regulations and the drawings in the Schedules say nothing about a hole in the top. Some manufacturers have adopted a hole in the top to allow fitting of accessories they also supply, such as lamps, barrier sections etc.
http://www.opsi.gov.uk/SI/si2002/20023113.htm#56
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Rank: Forum user
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Why a hole in the top of a road traffic cone? Simples...
When dropped from amoving vehicle, as in setting out on a dual carraigeway it prevents bounce by the force of pressure moving through an ever decreasing conical shape. when lifting from a stack, it prevents suction so allowing it to be separated from the one below easily.
Lamps are not fitted into the hole...
Its just good design.
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Rank: Forum user
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Sorry this is a bit late, I've been on holiday!
The traffic signs regulations do not require a hole in the top of a cone, so it is not illegal for you to place your cones on the road; however the BS goes further...
The British Std for road cones BS EN13422 states in section 4.1.2.3 that ..... "the top of the cone body
shall have a circular hole provided in its upper surface. The hole shall have a diameter of (40 ± 5) mm."
The top of the cone should also be designed to provide a hand-grip. Elsewhere in the standard it also requires cones to be designed so that they do not bind together when stacked [doesn't specify a method].
If the cones were sold as complying with BS EN13422 and they don't have a hole its time to go back to your supplier.
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