Talk:Key:hazmat

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adr instead of hazmat

Wouldnt it be better to call the tag "adr" instead of "hazmat" - ADR is the European/UN regulatory name for the restrictions of transporting hazardous material on streets. It has meanwhile been signed by a lot more states than just the europeans. Flohoff 11:13, 18 February 2009 (UTC)

http://en.wikipedia.org/wiki/European_Agreement_concerning_the_International_Carriage_of_Dangerous_Goods_by_Road
Good point, yet I think that most countries have implemented the various traffic signs and their meanings for these restrictions at a national level. Mostly it means that the signs refer to national groupings and maximum allowed quantities of classified materials and not directly to the classes 1 to 9 as defined in the ADR agreement. But maybe it should be mentioned on the page. Alv 12:11, 18 February 2009 (UTC)
The UN regulatory name is actually "dangerous goods". – Minh Nguyễn 💬 00:14, 14 November 2021 (UTC)

new tunnel categories since 2010-01-01

New tunnel categories for hazard materials were introduced at 2010-01-01. Categories from A to E exists where A is the standard and means no restrictions. From B to E the driving allowance becomes more strict. This means a hgv with material of category C could drive through a tunnel with the categories C,D or E but not through an B tunnel. Furthermore a tunnel can be categorized in several categories depending on times or weekdays. All tunnels of the TERN (transeuropean road network) will be categorized.

Proposed key: hazmat:tunnel_cat=B-E

--vsandre 15:50, 17 March 2010 (UTC)

Include ADR in key

The key should include "adr" as there may be other classification systems in use around the world. ADR is formally only for "Europe" (UNECE countries). I suggest hazmat:adr_tunnel_cat=A-E . I have also included "A" as a valid value as it may be signed explicitly although this is not expected. --Csmale 19:34, 27 August 2011 (BST)

Specific hazmat restrictions

Is there a way to tag this restriction: The access to a tunnel with an hgv with hazmat loading is only allowed when they have an orange blinking light at the top --TBKMrt (talk) 18:30, 26 March 2019 (UTC)

I think it should be called a prescription: you must have a blinking light when entering the tunnel and transporting hazmat. Is there specific signage? Otherwise it would be like tagging: you must turn on the light when it is dark, etc. —Dieterdreist (talk) 22:06, 26 March 2019 (UTC)
Access to this tunnel is hazmat=no unless you have a blinking light. Note that not every tunnel on this street has this restriction
--TBKMrt (talk) 18:31, 28 March 2019 (UTC)
@TBKMrt: In the absence of a well-established tagging convention, you could use a conditional restriction such as hazmat=no hazmat:conditional=yes @ (flashing_light). (Substituting whatever the technical name would be for these lights.) – Minh Nguyễn 💬 20:15, 3 April 2019 (UTC)
I added a section on the main page with your suggestion and collected all tunnel related information under one header.
Do you think eg. hazmat:B=no is suitable for a cat B tunnel (which would imply that ADR goods with cat B, C, D and E are not allowed to be transported trhough it)
--TBKMrt (talk) 10:27, 9 April 2019 (UTC)

Use hazmat=[letter] instead of hazmat:[letter]=yes/no ?

Wouldn't it be easier to tag and read to just use hazmat=[letter], like hazmat=E ? I mean we just tag what's exist.--Florimondable (talk) 10:58, 18 June 2020 (UTC)

I don't think that way. The hazard key is an access key. It should be extended by "access:hazard" but "access:" had been left out. In this case hazard disallows access for dangerous goods with "no". Type of dangerous goods can be narrowed down by letter A to E specifying a group of goods, or such as explosives. So what to do with sub-group of goods? Disallow access with "no", or allow access with "yes" (if this sign ever would exist). Beside "Yes" and "No" there could be other values like "delivery". With "hazard:D=*" the general rules for access keys can be applied. --Vanagaudi (talk) 11:32, 18 June 2020 (UTC)