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Carriage of Dangerous Goods

This document gives guidance for the restrictions in place relating to the transit of dangerous goods through the Mersey Tunnels.

Mersey Tunnels have been classified as category D tunnels under the ADR regulations (see classifications in table 1 below). It is the direct responsibility of the haulier to comply with the ADR regulations.

Rules for the transportation of dangerous goods by road are contained within publications by ADR (International Carriage of Dangerous Goods by Roads and can be accessed via http://www.hse.gov.uk/cdg/manual/adrcarriage.htm

 Tunnel Category Restriction
 A No restrictions
 B Restriction for dangerous goods which may led to a very large explosion
 C Restriction for dangerous goods which may lead to a very large exposition, a large explosion or a large toxic release and dangerous goods restricted in tunnel category B
 D Restriction for dangerous goods which may lead to a very large explosion, to a large explosion, to a large toxic release or to a large fire and dangerous goods restricted in tunnel category C
 E Restriction for all dangerous goods other than UN Nos 2919, 3291, 3331, 3359 and 3373.

Table 2 below provides an up to date list of the 24 substances most commonly transported through the Mersey Tunnels and indicates any restrictions in place.

If you have any queries regarding this or are wishing to transport dangerous goods which are not included in the table please see http://www.hse.gov.uk/cdg/manual/adrcarriage.htm for details of the category alternatively contact Mersey Tunnels Police on 0300 3000 999 (recorded line) for clarification Any vehicle that is conveying a substance covered by the ADR Regulations must stop at the designated Police Declaration points prior to entering the Mersey Tunnels and the driver is to declare to Mersey Tunnels Police the nature and quantity of that substance.

For the avoidance of doubt failure to declare is a contravention of the Mersey Tunnels Byelaws and the driver may be reported and summonsed for contravening Section 7 of the Mersey Tunnels Byelaws (Dangerous Goods, Vehicles or Containers.

UN Number Packing Group Transport Category and Tunnels Restriction Under restriction for Mersey Tunnels Maxinum Quantity (unescorted per container) Maxinum Quantity (unescorted per vehicle) Larger Roads Permitted under Escort Empty tankers Permitted Escorted or Unescorted
UN 1044 - 3, E Not restricted No limit No limit No limit N/A
UN 1066 - 3, E Not restricted No limit No limit No Limit N/A
UN 1090 II 2, D/E Yes 25 1000 Yes Escorted
UN 1170 II 2, D/E Yes 25 1000 Yes Escorted
III 3, D/E Yes 25 1000 Yes Escorted
UN 1202 II 3, D/E Yes 250 No limit Yes Unescorted
UN 1203 II 2, D/E Yes 25 1000 Yes Escorted
UN 1223 III 3, D/E Yes 250 No limit Yes Unescorted
UN 1791 II 2, E Not restricted No limit No limit No limit Unescorted
III 3, E Yes 250 No limit Yes Unescorted
UN 1814 II 2, E Not restricted No limit No limit No limit Unescorted
III 2, E Yes 250 No limit Yes Unescorted
UN 1824 II 2, D/E Not restricted No limit No limit No limit Unescorted
III 3, E Not restricted No limit No limit No limit Unescorted
UN 1866 I D/E Yes 5 100 No No
II D/E Yes 25 1000 Yes Escorted
III D/E Yes 250 No limit Yes Unescorted
UN 1956 - 3, E Not restricted No limit No limit No limit N/A
UN 1978 - 2, B/D Yes 50 50 No No
UN 1993 I D/E Yes 5 100 No No
II D/E Yes 25 1000 Yes Escorted
III D/E Yes 250 No limit Yes Unescorted
UN 2067 III 3, E Not restricted No limit No limit No limit N/A
UN 2187 - 3, C/E Yes No limit 20 cyls maximum Yes Unescorted
UN 2491 III 3, E Not restricted No limit No limit No limit Unescorted
UN 2586 III 3, C/E Not restricted No limit No limit No limit Unescorted
UN 2672 III 3, E Not restricted No limit No limit No limit Unescorted
UN 2922 I 1, C/D Yes 16 100 No No
II 2, E Not restricted No limit No limit No limit Unescorted
III 3, E Not restricted No limit No limit No limit Unescorted
UN 3082 III 3, E Not restricted No limit No limit No limit Unescorted
UN 3257 III 3, D Yes 250 No limit Yes Unescorted
UN 3291 II 2 Not restricted No limit under ADR (previously 25kg) No limit under ADR (previously 100kg) No limit N/A

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