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Upcoming changes to the fire testing of materials used in bus and coach interiors


​The transitional period for the amended ECE Regulation 118 ends on 26 July 2016.

Significant changes

  • Insulation materials used in engine and heating compartments will now be tested.
  • A new burning rate test means that some materials will be subject to much stricter requirements than before.
  • There is now an alternative method for fire testing materials used in ships and trains.

Determining the burning rate of materials

According to the revised ECE Regulation 118, the horizontal burning rate of materials will only be tested for materials installed in a horizontal position. The burning rates of other materials will be tested with the test specimen mounted in a vertical position, as described in Annex 8.

The burning rate standard remains unchanged at no more than 100 mm/min. This will mean much stricter requirements for materials that will now be tested in a vertical rather than horizontal position.

An ISO 5658-2 test can be used instead of the methods described in Annexes 7 and 8

When testing materials used in ships and trains, an ISO 5658-2 fire test is now a valid alternative.

Materials with an average CFE (critical heat flux at extinguishment) of at least 20 kW/m2 will meet the requirements of Annexes 7 and 8, provided no burning drops are observed.

We offer fire-safety tests for the type approval of bus and coach materials

VTT Expert Services Ltd provides testing services for the fire-safety and type-approval of materials used in buses and coaches. We can also assist you in planning fire testing and type-approval examinations.

Tel.+358 20 722 7070
Fax+358 20 722 7001

Opening hours 9:00 - 11:00 and 12:00 - 15:00, GMT +2 time zone


P.O. Box 47, FI-02151 Espoo, Finland
Tel. exchange +358 20 722 111
Opening hours Mon - Fri 8:00 - 16:30,
GMT +2 time zone
Fax +358 20 722 7001
Contact us

Tel. +358 20 722 7070
Fax +358 20 722 7001
Opening hours 9:00 - 11:00 and
12:00 - 15:00,
GMT +2 time zone