1.9

TRANSPORT RESTRICTIONS BY THE COMPETENT AUTHORITIES

In accordance with Article 4, paragraph 1 of ADR, the entry of dangerous goods into the territory of
Contracting Parties may be subject to regulations or prohibitions imposed for reasons other than safety
during carriage. Such regulations or prohibitions shall be published in an appropriate form.

Subject to the provisions of 1.9.3, a Contracting Party may apply to vehicles engaged in the
international carriage of dangerous goods by road on its territory certain additional provisions not
included in ADR, provided that those provisions do not conflict with Article 2, paragraph 2 of
the Agreement, and are contained in its domestic legislation applying equally to vehicles engaged in
the domestic carriage of dangerous goods by road on the territory of that Contracting Party.

Additional provisions falling within the scope of 1.9.2 are as follows:
(a) Additional safety requirements or restrictions concerning vehicles using certain structures such
as bridges, vehicles using combined transport modes such as ferries or trains, or vehicles
entering or leaving ports or other transport terminals;
(b) Requirements for vehicles to follow prescribed routes to avoid commercial or residential areas,
environmentally sensitive areas, industrial zones containing hazardous installations or roads
presenting severe physical hazards;
(c) Emergency requirements regarding routeing or parking of vehicles carrying dangerous goods
resulting from extreme weather conditions, earthquake, accident, industrial action, civil
disorder or military hostilities;
(d) Restrictions on movement of dangerous goods traffic on certain days of the week or year.

The competent authority of the Contracting Party applying on its territory any additional provisions
within the scope of 1.9.3 (a) and (d) above shall notify the secretariat of the United Nations Economic
Commission for Europe of the additional provisions, which secretariat shall bring them to the
attention of the Contracting Parties1.

Tunnel restrictions

NOTE: Provisions concerning restrictions for the passage of vehicles through road tunnels are also
included in Chapter 8.6.

General provisions

When applying restrictions to the passage of vehicles carrying dangerous goods through tunnels, the
competent authority shall assign the road tunnel to one of the tunnel categories defined in 1.9.5.2.2.
Account should be taken of the tunnel characteristics, risk assessment including availability and
suitability of alternative routes and modes and traffic management considerations. The same tunnel
may be assigned to more than one tunnel category, e.g. depending on the hours of the day, or the day
of the week etc.

Categorization

The categorization shall be based on the assumption that in tunnels there are three major dangers
which may cause numerous victims or serious damage to the tunnel structure:
(a) Explosions;
(b) Release of toxic gas or volatile toxic liquid;
(c) Fires.

The five tunnel categories are the following:
Tunnel category A:
No restrictions for the carriage of dangerous goods;
Tunnel category B:
Restriction for the carriage of dangerous goods which may lead to a very large explosion;
The following dangerous goods are considered to fulfil this criterion2:
 
Class 1: Compatibility groups A and L;
Class 3: Classification code D (UN Nos. 1204, 2059, 3064, 3343, 3357 and 3379);
Class 4.1: Classification codes D and DT; and
Self-reactive substances, type B (UN Nos. 3221, 3222, 3231 and 3232);
Class 5.2: Organic peroxides, type B (UN Nos. 3101, 3102, 3111 and 3112).
When the total net explosive mass per transport unit is greater than 1000 kg:
Class 1: Divisions 1.1, 1.2 and 1.5 (except compatibility groups A and L).
When carried in tanks:
Class 2: Classification codes F, TF and TFC;
Class 4.2: Packing group I;
Class 4.3: Packing group I;
Class 5.1: Packing group I.
Class 6.1: UN No. 1510

Tunnel category C:

Restriction for the carriage of dangerous goods which may lead to a very large explosion, a large
explosion or a large toxic release;
The following dangerous goods are considered to fulfil this criterion2:
- the dangerous goods restricted in tunnel category B, and
- the following dangerous goods:
Class 1: Divisions 1.1, 1.2 and 1.5 (except compatibility groups A and L); and
Division 1.3 (compatibility groups H and J);
Class 7: UN Nos. 2977 and 2978.
When the net explosive mass per transport unit is greater than 5000 kg:
Class 1: Division 1.3 (compatibility groups C and G).
When carried in tanks:
Class 2: Classification codes 2A, 2O, 3A and 3O, and classification codes containing the
letter T only or letter groups TC, TO and TOC
Class 3: Packing group I for classification codes FC, FT1, FT2 and FTC;
Class 6.1: Packing group I, except UN No. 1510
Class 8: Packing group I for classification codes CT1, CFT and COT.
Tunnel category D:
Restriction for the carriage of dangerous goods which may lead to a very large explosion, to a large
explosion, to a large toxic release or to a large fire;
The following dangerous goods are considered to fulfil this criterion2:
- the dangerous goods restricted in tunnel category C, and
- the following dangerous goods:
Class 1: Division 1.3 (compatibility groups C and G);
Class 2: Classification codes F, FC, T, TF, TC, TO, TFC and TOC;
Class 4.1: Self-reactive substances, types C, D, E and F; and
UN Nos. 2956, 3241, 3242, 3251, 3531, 3532, 3533 and 3534;
Class 5.2: Organic peroxides, types C, D, E and F;
Class 6.1: Packing group I for classification codes TF1, TFC and TFW and UN No.3507; and
Toxic by inhalation entries for which special provision 354 is assigned in column (6)
of Table A of Chapter 3.2 and toxic by inhalation entries of UN Nos. 3381 to 3390;
Class 8: Packing group I for classification codes CT1, CFT and COT;
Class 9: Classification codes M9 and M10.
When carried in bulk or in tanks:
Class 3
Class 4.2: Packing group II;
Class 4.3: Packing group II;
Class 6.1: Packing group II; and
Packing group III for classification code TF2;
Class 8: Packing group I for classification codes CF1, CFT and CW1; and
Packing group II for classification codes CF1 and CFT
Class 9: Classification codes M2 and M3.
Tunnel category E:
Restriction for the carriage of all dangerous goods other than those for which ‘(-)’ is marked in
Column (15) of Table A of Chapter 3.2 and for all dangerous goods in accordance with the provisions
of Chapter 3.4 if the quantities carried exceed 8 tonnes total gross mass per transport unit..
NOTE: For the dangerous goods assigned to UN Nos. 2919 and 3331, restrictions to the passage
through tunnels may, however, be part of the special arrangement approved by the competent
authority(ies) on the basis of 1.7.4.2.

Provisions for road signs and notification of restrictions

Contracting Parties shall indicate tunnel prohibitions and alternative routes by means of signs and
signals.

For this purpose, they may use signs C, 3h and D, 10a, 10b and 10c and signals according to the
Vienna Convention on Road Signs and Signals (Vienna, 1968) and the European Agreement
supplementing the Convention on Road Signs and Signals (Geneva, 1971) as interpreted by the
Resolution on Road Signs and Signals (R.E.2) of the UNECE Inland Transport Committee Principal
Working Party on Road Transport, as amended.

In order to facilitate international understanding of signs, the system of signs and signals prescribed in
the Vienna Convention is based on the use of shapes, and colours characteristic of each class of signs
and wherever possible, on the use of graphic symbols rather than inscriptions. Where Contracting
Parties consider it necessary to modify the signs and symbols prescribed, the modifications made shall
not alter their essential characteristics. Where Contracting Parties do not apply the Vienna
Convention, the prescribed signs and symbols may be modified, provided that the modifications made
shall not alter their essential intent.

 

Traffic signs and signals intended to prohibit access of vehicles carrying dangerous goods to road
tunnels shall be affixed at a place where the choice of alternative routes is possible.
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