Taxiway signs: Difference between revisions
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* [[FGSignMaker]] | * [[FGSignMaker]] | ||
* [[Sign Specification Proposal]] | * [[Sign Specification Proposal]] | ||
* [[Howto:Modeling Ground Signs with Blender]] | |||
== External links == | == External links == |
Revision as of 12:28, 21 June 2014
Taxiway signs add a great deal of realism and information to an airport. FlightGear supports the apt.dat 850 signs specification.
Users interested in helping to improve the scenery are extremely welcome to read the Placing signs section of this article. FGSignMaker, a tool to generate taxiway sign codes, is a tool that can make placing taxiway signs easier.
Explanation of signs
There are many types of signs on airfields. The following table explains the used syntax.
Taxiway Signs
Placing signs
Signs can be placed by obtaining the lat/lon coordinates from a GNU GPL licensed source.
You can also use the UFO for easier positioning. Load (by pressing the l-key) the $FG ROOT/Aircraft/UFO/Models/sign.ac model to find the correct headings. After dumping the data, replace OBJECT_SHARED by OBJECT_SIGN and add the sign codes instead of Aircraft/UFO/Models/sign.ac.
Sign types
These instructions specify sign types. They refer to the sign names in the FAA specification:
Name | Instructions | Description |
---|---|---|
L858-Y | @Y | "Direction, Destination, Boundary" sign (black on yellow) |
L858-R | @R | "Mandatory Instruction" sign (white on red with black outline) |
L858-L | @L | "Location" sign (yellow text and frame on black) |
L858-B | @B | "Runway Distance Remaining" sign (white on black) |
These sign type specifiers are used to request FAA signs L858-Y, L858-R, L858-L and L858-B of unspecified size. It is up to the implementation to choose a default size. If the size is known, then a size digit is appended, which also refers to the FAA standard:
Size 1 0.460 m |
Size 2 0.610 m |
Size 3 0.760 m |
Size 4 1.220 m |
Size 5 0.760 m | |
---|---|---|---|---|---|
L858-Y | @Y1 | @Y2 | @Y3 | ||
L858-R | @R1 | @R2 | @R3 | ||
L858-L | @L1 | @L2 | @L3 | ||
L858-B | @B4 | @B5 |
Multi-Letter Glyph Names
^u | up arrow |
^d | down arrow |
^l | left arrow |
^r | right arrow |
^lu | left-up arrow |
^ru | right-up arrow |
^ld | left-down arrow |
^rd | right-down arrow |
r1 | roman numeral I |
r2 | roman numeral II |
r3 | roman numeral III |
no-entry | no-entry sign (white circle with horizontal bar on red background) |
Note that diagonal arrows always have the right/left letter first, as is common in Cartesian coordinate systems. So it's ru (right up), not ur.
Examples
- OBJECT_SIGN {@Y,@l}S7{@L}B{@Y}S8{@ru} -22.592 63.985 46 72
- OBJECT_SIGN {@Y}MAX_SPAN_52M -22.592 63.985 46 72
- OBJECT_SIGN {@R,no-entry} -22.592 63.985 46 72
- OBJECT_SIGN {@L}V2{@R}06-24 -22.592 63.985 46 72