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Appendix ANNEX N EMERGENCY LIGHTING REQUIREMENTS

United Kingdom

Original text. Later amendments are not shown.

N.1.

General points

Emergency lighting has to allow for the continued occupation or evacuation of a vehicle in complete safety.

The emergency lighting system shall provide the minimum number of lights to allow passengers to move around inside vehicles and to evacuate them while being able to identify the presence of obstacles.

Reduced visibility caused by, for example, the presence of smoke, should be taken into account.

Emergency lighting shall be activated automatically if required and its automatic settings shall not be accessible to passengers.

N.2.

Electrical supply

The emergency lighting system shall be fed from the vehicle battery by at least one dedicated wiring circuit. If the vehicle is not equipped with its own battery and if it can be uncoupled in normal service, the emergency lighting system must be provided with its own source of supply.

N.3.

Illumination levels

The minimum average illumination level of the emergency lighting has to be ≥ 5 lux and this value must be measured at floor level and along the central axis of the gangway.

The minimum value at the evacuation thresholds has to be ≥ 30 lux.

The minimum value for the evacuation signs has to be ≥ 50 lux.

All the values must be measured according to methods indicated in Chapter 6 of this present TSI.

N.4.

Uniformity of illumination

The mean lighting level for the sustained lighting measured according to the requirements of Chapter 6 of this present TSI must be between 0,2 and 10.

N.5.

Limitation of the dazzle phenomena

To minimise the effect of dazzle, the intensity of the illumination of the emergency lamps shall not exceed 400 cd/m 2 in the generally visible zone (up to 60° over the horizontal plane of the lamp).

N.6.

Performance on ignition

The performance on ignition of the sustained lighting has to reach 50 % of the required illumination levels within five seconds and 100 % of the illumination level required in the 15 seconds.

N.7.

Operating duration

Except where otherwise agreed between the user and the manufacturer, the emergency lighting shall continue to operate for:

  • at least one hour on railway vehicles intended for the public transport systems,

  • at least three hours other railway vehicles.

After the failure of the electric supply in the vehicle, e.g. the battery charging system.

Note:

the specified durations apply to a battery completely charged under conditions agreed between the buyer and the manufacturer.

N.8.

Layout of the emergency lighting

The emergency lights must be arranged as follows:

  • at least in every autonomous zone, e.g. compartments, toilet, driver's cab, kitchen,

  • next to doors and steps, in particular at emergency exits,

  • in the zones where obstacles can be present, e.g. presence of luggage in the side aisles, the hallways,

  • in the neighbourhood of breaks or changes of direction in the central aisles or the side aisles,

  • at every change in floor level.