Motor vehicles and trailers intended for use as transport units for dangerous goods shall fulfil all
relevant technical requirements of ECE Regulation No.134, as amended, in accordance with the dates
of application specified therein.
EX/II, EX/III, FL and AT vehicles shall fulfil the requirements of ECE Regulation No.134, Annex 5.
Prevention of fire risks
The following technical provisions shall apply in accordance with the table of 9.2.1.
Fuel tanks and cylinders
The fuel tanks and cylinders supplying the engine of the vehicle shall meet the following
(a) In the event of any leakage under normal conditions of carriage, the liquid fuel or the liquid
phase of a gaseous fuel shall drain to the ground and not come into contact with the load or
hot parts of the vehicle;
(b) Fuel tanks for liquid fuels shall meet the requirements of ECE Regulation No. 345; fuel tanks
containing petrol shall be equipped with an effective flame trap at the filler opening or with a
closure enabling the opening to be kept hermetically sealed. Fuel tanks and cylinders for LNG
and for CNG respectively shall meet the relevant requirements of ECE Regulation No. 1106.
Fuel tanks for LPG shall meet the relevant requirements of ECE Regulation No. 677.
(c) The discharge opening(s) of pressure relief devices and/or pressure relief valves of fuel tanks
containing gaseous fuels shall be directed away from air intakes, fuel tanks, the load or hot
parts of the vehicle and shall not impinge on enclosed areas, other vehicles, exterior-mounted
systems with air intake (i.e. air-conditioning systems), engine intakes, or engine exhaust. Pipes
of the fuel system shall not be fixed on the shell containing the load.
4 ECE Regulation No. 13 (Uniform provisions concerning the approval of vehicles of categories M, N and O
with regard to braking).
5 ECE Regulation No. 34 (Uniform provisions concerning the approval of vehicles with regard to the prevention
of fire risks)
6 ECE Regulation No. 110 (Uniform provisions concerning the approval of:
I. Specific components of motor vehicles using compressed natural gas (CNG) and/or liquefied natural
gas (LNG) in their propulsion systems;
II. Vehicles with regard to the installation of specific components of an approved type for the use of
compressed natural gas (CNG) and/or liquefied natural gas (LNG) in their propulsion system).
7 ECE Regulation No. 67 (Uniform provisions concerning the approval of:
I. Approval of specific equipment of vehicles of category M and N using liquefied petroleum gases in
their propulsion system
II. Approval of vehicles of category M and N fitted with specific equipment for the use of liquefied
petroleum gases in their propulsion system with regard to the installation of such equipment)
The engine propelling the vehicle shall be so equipped and situated to avoid any danger to the load
through heating or ignition. The use of CNG or LNG as fuel shall be permitted only if the specific
components for CNG and LNG are approved according to ECE Regulation No. 1106 and meet the
provisions of 9.2.2. The installation on the vehicle shall meet the technical requirements of 9.2.2 and
ECE Regulation No. 1106. The use of LPG as fuel shall be permitted only if the specific components
for LPG are approved according to ECE Regulation No. 677 and meet the provisions of 9.2.2. The
installation on the vehicle shall meet the technical requirements of 9.2.2 and ECE Regulation No. 677.
In the case of EX/II and EX/III vehicles the engine shall be of compression-ignition construction
using only liquid fuels with a flashpoint above 55 °C. Gases shall not be used.
The exhaust system (including the exhaust pipes) shall be so directed or protected to avoid any danger
to the load through heating or ignition. Parts of the exhaust system situated directly below the fuel
tank (diesel) shall have a clearance of at least 100 mm or be protected by a thermal shield.
Vehicle endurance braking
Vehicles equipped with endurance braking systems emitting high temperatures placed behind the rear
wall of the driver's cab shall be equipped with a thermal shield securely fixed and located between this
system and the tank or load so as to avoid any heating, even local, of the tank wall or the load.
In addition, the thermal shield shall protect the braking system against any outflow or leakage, even
accidental, of the load. For instance, a protection including a twinshell
shield shall be considered
Combustion heaters shall comply with the relevant technical requirements of ECE Regulation
No. 1228, as amended, in accordance with the dates of application specified therein and the provisions
of 184.108.40.206.2 to 220.127.116.11.6 applicable according to the table in 9.2.1.
The combustion heaters and their exhaust gas routing shall be designed, located, protected or covered
so as to prevent any unacceptable risk of heating or ignition of the load. This requirement shall be
considered as fulfilled if the fuel tank and the exhaust system of the appliance conform to provisions
similar to those prescribed for fuel tanks and exhaust systems of vehicles in 18.104.22.168 and 22.214.171.124