7.1.1 The illuminant should be safely fitted in
the daylight signalling lamp; use of screwed sockets should be avoided.
7.1.2 Daylight signalling lamps should be designed
in such a way that the illuminant can be easily replaced also in the
dark.
7.1.3 The sighting mechanism should be mounted
in a fixed attitude, parallel to the optical axis.
7.1.4 All parts of daylight signalling lamps should
be made of anti-magnetic material.
7.1.5 Daylight signalling lamps should be so constructed
that the accumulation of condensed water is avoided.
7.1.6 The materials used should withstand heat
generation during operation.
7.1.7 With respect to durability and resistance
to environmental conditions, daylight signalling lamps should meet
the requirements specified in resolution
A.694(17) and in the applicable international standards.footnote