|Restrictions on vehicles transporting hazardous materials.|
|Used on these elements|
|Tools for this tag|
For marking of roads where transporting of hazardous materials is forbidden - or designated if such signs did exist.
Roads where transporting hazardous materials is forbidden can be tagged with hazmat=no.
Where local authorities divide hazardous materials into several groups, they might be appended with a colon, e.g. hazmat:A=no
Such divisions can be described on this page (on a per country basis if variations exist).
As with any access=*.
Since January 2010, a specific regulation is applied to the tunnel: There are five categories (A, B, C, D, E)
|Tunnel categories||The selected category fixes the list of dangerous goods whose transport is forbidden in the tunnel||Transport of dangerous goods authorized in the tunnel||example|
|A||transport of dangerous goods without restrictions||B, C, D, E and dangerous goods without tunnel restriction code||Austria, B171, Kufstein-Pians, Stadtberg, code A, Note: required use of warning lamps in accordance with ECE regulation 65|
|B||restriction on the transport of dangerous goods with a very large explosion range.||C, D, E and dangerous goods without tunnel restriction code.||Germany, A31, Leer, Ems, code B.|
|C||restriction on the transport of dangerous goods with a very long-range, long-range or long-range poisoning explosion. (gas or volatile liquid)||D, E and dangerous goods without tunnel restriction code.||France, A43, Modane-Bardonnechia(it), Frejus, code C, Note: Required escort for ADR classes 1 and 2.|
|D||restriction on the transport of dangerous goods that threaten a very long-range explosion, a long-range explosion or a large-scale poisoning or a large fire.||E and dangerous goods without tunnel restriction code.||Holland, A22, Velsen, Velsen, code D|
|E||The restriction applies to all dangerous goods except: UN 2919,3291, 3331, 3359, 3373)||dangerous goods without tunnel restriction code except: UN 2919,3291, 3331, 3359, 3373.||Germany, Hamburg, Kronstieg, code E, Note: 06:00-21:00.|
dangerous goods without a tunnel restriction code correspond to the numbers NU 2919, 3291, 3331, 3359, 3373.
- EU minimum safety requirements for tunnels https://ec.europa.eu/transport/road_safety/topics/infrastructure/tunnels_en
||Vehicles with hazardous materials are only allowed to enter when using a flashing light.|
Use hazmat=no, but hazmat:B=destination - the auxiliary sign "VAK(B)" allows the transport to destination on that road, despite the name of the main traffic sign. Some places have a hazmat=designated to divert such traffic onto motorways.
Groups A and B exist. Their difference is (mostly) only in the amounts allowed, as defined separately for some 10 material classifications. Group B allows more of the materials. That is, for example less than 50 kg of explosives onboard is not a hazardous transport (by the signs, that is), any transport of 50 kg or more must obey they signs for group A (hazmat:A=*) and a transport of over 500 kg belongs to group B (hazmat:B=*).
Frequent use is hazmat=no.
In Germany exists a positive and negative network for transporting hazardous materials. Other streets should only be used to reach your destination. In water protection areas you can find special signs to protect water against contamination. For this we create a special subclass hazmat:water=*.
|hazmat=designated||Driving with hazardous materials explicitly encouraged (DE:Grundnetz Gefahrguttransporte)|
|hazmat:water=permissive||Drivers of water contaminating materials should use a other route.|
|hazmat:water=no||Driving with water contaminating materials forbidden.|
|hazmat=no||Driving with hazardous materials forbidden.|
- Main article: w:Dangerous goods#United States
Hazardous cargo restrictions have generally been tagged using hazmat=no. As of April 2019, very few class-specific hazardous cargo access restrictions have been tagged in the United States, so far mostly in Southern California. Following the general guidance above, one would use keys under the
hazmat:* namespace to indicate specific restricted classes:
To determine the correct class for each placard, consult the "Nine Classes of Hazardous Materials (Yellow Visor Card)" guide from the U.S. Department of Transportation. Local transportation authorities may have their own detailed guides as well, such as this guide from the Port Authority of New York and New Jersey.