CS ADR-DSN.M.770 Road-holding position light

(a)Applicability: A road-holding position light should be provided at each road-holding position serving a runway when it is intended that the runway should be used in runway visual range conditions less than a value of 550 m.

(b)Location: A road-holding position light should be located adjacent to the holding position marking 1.5 m (±0.5 m) from one edge of the road, i.e. left or right as appropriate to the local road traffic regulations.

(c)Characteristics:

(1)The road-holding position light should comprise:

(i)a controllable red (stop)/green (go) traffic light; or

(ii)a flashing-red light

(2)Provisions for control of the lights in paragraph (1)(i) above should be installed in the positions for the air traffic services.

(3)The road-holding position light beam should be unidirectional and aligned so as to be visible to the driver of a vehicle approaching the holding position.

(4)The intensity of the light beam should be adequate for the conditions of visibility and ambient light in which the use of the holding position is intended but should not dazzle the driver.

(5)The flash frequency of the flashing red light should be between 30 and 60 flashes per minute.

[Issue: ADR-DSN/3]