Alpha India Group

General Discussions => General Discussion => Topic started by: Toohigh on August 06, 2018, 09:54:20 PM

Title: Symbols and colors on taxiway?-What do they mean?
Post by: Toohigh on August 06, 2018, 09:54:20 PM
Here is a pic of GMMN taxiway to RWY 35R.
What do the green area and the yellow stripes mean on the taxiway?
Title: Re: Symbols and colors on taxiway?-What do they mean?
Post by: Toohigh on August 06, 2018, 09:57:05 PM
Another example with yellow/black stripes.
These stripes were added not a long time ago.
Title: Re: Symbols and colors on taxiway?-What do they mean?
Post by: SteveLewis on August 06, 2018, 10:52:22 PM
I'm pretty sure it means "You No Go Here"    :D
Title: Re: Symbols and colors on taxiway?-What do they mean?
Post by: johanfrc on August 06, 2018, 10:59:15 PM
Found this:

Taxi Shoulder Markings:

    Taxi Shoulder Markings
    Although shoulders may have the appearance of full strength pavement they are not intended for use by aircraft, and may be unable to support an aircraft
    In these areas, taxiway shoulder markings are used to indicate the pavement is unusable
        Examples: taxiways, holding bays, and aprons are sometimes provided with paved shoulders to prevent blast and water erosion which are not intended for use by aircraft
        Used where conditions exist such as islands or taxiway curves that may cause confusion as to which side of the edge stripe is for use by aircraft [Figure 17]
    Consists of yellow lines perpendicular to the taxiway edge markings.

Figure 17:
(http://www.cfinotebook.net/graphics/aircraft-operations/terminal/airport-markings-and-signs/taxi-shoulder-markings.gif)

http://www.cfinotebook.net/notebook/aircraft-operations/terminal/airport-markings-and-signs

In some airports the taxiway shoulders are able to support a plane, but when the markings are there, the shoulders are not able to support a plane.

An example could be this:
(https://comps.canstockphoto.com/runway-intersection-and-taxiway-stock-photo_csp7906222.jpg)

As you can see there is no markings on the taxiway shoulder (in the turn closest to the camera), which I guess means that the shoulders are ale to support a plane. But those with markings as you have shown in the above posts (but also before the turn on the picture above), are not able to support a plane. Therefore they are marked.
Title: Re: Symbols and colors on taxiway?-What do they mean?
Post by: RobW94 on August 07, 2018, 08:43:13 AM
Whenever I need to look up any airfield markings I use CAP637 as my first point of call. Itâ??s much more user friendly than any ICAO documents.

https://publicapps.caa.co.uk/docs/33/CAP637%20Visual%20Aids%20Handbook.pdf
Title: Re: Symbols and colors on taxiway?-What do they mean?
Post by: Wing Commander on August 07, 2018, 02:07:31 PM
A wonderful and simple explanation by johanfrc - thanks very much for imparting your knowledge to those that may have no idea of manuals etc to look up - unless you're familiar with them from working in the aviation field. Well Done!
Title: Re: Symbols and colors on taxiway?-What do they mean?
Post by: Toohigh on February 06, 2019, 04:21:55 PM
Hello

I want to bring up this topic again because there are more markings where i could not find infos about them.

What do the colors mean on the screenshot?

It starts from the right with red then blue then green then yellow.
This os from GMMN taxiway Tango 1 near RWY 17L

On Tango 5, opposite direction there is a pad with the same colors but to the other direction.
The order is the same. So the pilots see red first then blue green yellow.




Title: Re: Symbols and colors on taxiway?-What do they mean?
Post by: Toohigh on February 11, 2019, 04:26:02 PM
Hello

I uploaded the pics via directupload to give a better view and to see more details.
Hope that somebody knows the answer of what these clor codes mean



(https://s17.directupload.net/images/190211/frm6a6uq.png) (https://www.directupload.net)

(https://s17.directupload.net/images/190211/lptzjinx.png) (https://www.directupload.net)