---
title: "GM1 ADR-DSN.M.745 Runway guard lights — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "Runway incursions may take place in all visibility or weather conditions."
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights/gm1-adr-dsn-m-745"
---

# GM1 ADR-DSN.M.745 Runway guard lights

Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7 · Regulation (EU) No 139/2014 · EAR revision 13 Mar 2026

GM Guidance material

## GM1 ADR-DSN.M.745 Runway guard lights

(a) [Runway](https://avioverse.aero/glossary/easa/runway) incursions may take place in all visibility or weather conditions. The use of [runway guard lights](https://avioverse.aero/glossary/easa/runway-guard-lights) at runway-holding positions can form part of effective runway incursion prevention measures.

(b) Where taxiways are substantially wider than those specified in CS ADR-DSN.D.245, such as widethroat taxiways, the lights in Configuration A, located at each of the sides, are likely to be missed by pilots and may be necessary to be supplemented by a row of lights (inset) located across the [taxiway](https://avioverse.aero/glossary/easa/taxiway), Configuration B.

(c) Higher light intensities may be required to maintain ground [movement](https://avioverse.aero/glossary/easa/movement) at a certain speed in low visibilities.

(d) The optimum flash rate is dependent on the rise and fall times of the lamps used. Runway guard lights, Configuration A, installed on 6.6 ampere series circuits have been found to look best when operated at 45 to 50 flashes per minute per lamp. Runway guard lights, Configuration B, installed on 6.6 ampere series circuits have been found to look best when operated at 30 to 32 flashes per minute per lamp.

(e) Where there is a need to enhance the contrast between the on- and off-state of runway guard lights, Configuration A, intended for use during the day, a visor of sufficient size to prevent sunlight from entering the lens without interfering with the function of the fixture should be located above each lamp. Some other device or design, e.g. special designed optics, may be used in lieu of the visor.

(f) Additional guidance on runway guard lights is given in ICAO Doc 9157, [Aerodrome](https://avioverse.aero/glossary/easa/aerodrome) Design Manual, Part 4, [Visual Aids](https://avioverse.aero/glossary/easa/visual-aids).

\[Issue: ADR-DSN/3]

\[Issue: ADR-DSN/6]

GM · GM1 ADR-DSN.M.745 — Regulation (EU) No 139/2014 · ED Decision 2022/006/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

[All rules in CHAPTER M — VISUAL AIDS FOR NAVIGATION (LIGHTS)](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-m-visual-aids-for-navigation-lights)

Consolidated from the EASA Easy Access Rules (revision 13 Mar 2026, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.