Solution For Bridge

Key points of installation:

Obstruction lights are used to mark the overall contour of bridges, including the highest points and the extreme edges of the bridges.

Lamps layering: In vertical direction, low intensity obstruction light and medium intensity obstruction light type B shall be spaced equally with the spacing not exceeding 52m, medium intensity obstruction light type A and high intensity obstruction light shall be spaced equally with the spacing not exceeding 105m.

Obstruction lights on the same bridge shall flash simultaneously.

When H＜45m, low intensity obstruction lights type B or medium intensity obstruction lights type B shall be located on the top.

When 45≤H＜105m, medium intensity obstruction lights type B shall be located on the top, low intensity obstruction lights type B shall be located at intermediate levels.

When 105≤H＜150m, medium intensity obstruction lights type A shall be located on the top, medium intensity obstruction lights type B shall be located at intermediate levels.

When H≥150m, high intensity obstruction lights type A shall be spaced at uniform intervals not exceeding 105m, medium intensity obstruction lights type B shall be located between the layers of high intensity obstruction lights.

Design reference standards:

CAAC: MH5001-2021, MH/T6012-2015

ICAO: Annex 14 to the Convention on International Civil Aviation, Volume I-Ninth Edition, July 2022

FAA: AC150/5345-43J