---
title: "CS ADR-DSN.P.825 Taxiway edge markers — Certification Specifications and Guidance Material for Aerodrome Design (CS-ADR-DSN) — Issue 7, Aerodromes · Avioverse"
description: "Applicability: Taxiway edge markers should be provided on a taxiway where taxiway centre line or edge lights or taxiway centre line markers are not…"
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-p-visual-aids-for-navigation-markers/cs-adr-dsn-p-825"
---

# CS ADR-DSN.P.825 Taxiway edge markers

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

IR Implementing rule

## CS ADR-DSN.P.825 Taxiway edge markers

(a) Applicability: [Taxiway](https://avioverse.aero/glossary/easa/taxiway) edge markers should be provided on a taxiway where taxiway centre line or edge lights or taxiway centre line markers are not provided.

(b) Location: Taxiway edge markers should be installed at least at the same locations as would the taxiway edge lights, had they been used.

(c) Characteristics:

(1) A taxiway edge [marker](https://avioverse.aero/glossary/easa/marker) should be retroreflective blue.

(2) The marked surface as viewed by the pilot should be a rectangle and should have a minimum viewing area of 150 cm2.

(3) Taxiway edge markers should be frangible. Their height should be sufficiently low to preserve clearance for propellers and for the engine pods of jet [aircraft](https://avioverse.aero/glossary/easa/aircraft).

IR · CS ADR-DSN.P.825 — Regulation (EU) No 139/2014 · ED Decision 2014/013/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

[All rules in CHAPTER P — VISUAL AIDS FOR NAVIGATION (MARKERS)](https://avioverse.aero/regulations/easa/aerodromes/cs-adr-dsn/chapter-p-visual-aids-for-navigation-markers)

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.