( UK AIP GEN 2.3 )
Båda håller positionsskyltar. Båda återspeglar den fysiska teckenfärgen piloten skulle se, nedan är den röda J2 och svarta J1 som sedd från cockpiten ( YouTube ):
RedJ2
SvartJ1
Denrödaärförmellanliggandehållpositioner:
Where it is considered necessary to locate taxi-holding positions other than at runway/taxiway intersections – for example at taxiway/taxiway intersections in order to protect a priority route – the holding position should be identified by a single sign located wherever practicable on the left side of the taxiway. The sign consists of a combination of the letter designating the taxiway and a number identifying the hold position e.g. A1, A2, B2 etc. in white on a red background.
( CAP 168 Licensiering av Aerodromes )