Artikel 40

1. The signs indicating auxiliary service posts are the following:
(a) The sign „First-aid station” (III, A. 3 and III, A. 4) which shall be used to indicate that there is in the neighbourhood a first-aid station organized by an officially recognized association;
(b) The sign „mechanical help” (III, A. 5) which shall be used to indicate that there is a service station in the neighbourhood;
(c) The sign ”telephone” (III, A. 6) which shall be used to indicate that there is a telephone in the neighbourhood;
(d) The sign ”filling station” (III, A. 7) which shall be used to indicate that there is a filling station within the distance indicated on the sign.
2. The shorter side of the rectangle of the signs provided for in this article shall be placed horizontally. The colour shall be blue, with a black or dark symbol on a white square. In the case, however, of the signs III, A. 3 or III, A. 4, the symbol shall be red.
The side of the square shall be at least 0.30 m. In the case, however, of the sign III, A. 7, a white rectangle with the shorter side horizontal shall be substituted for the square.
3. The signs described in (b), (c) and (d) of paragraph 1 shall be used as prescribed by the competent authorities.