The standard runway markings are made with reflective white paint. The markings for taxiways and non-traffic areas are made with reflective yellow paint.
The number marked on a runway is the whole number nearest to the 10-degree increment of the bearing direction of the center of the runway. The last zero of the bearing is not used and single numbers are not preceded by a zero. For example a runway with a direction bearing of 090 degrees is designated as runway 9. A runway with a direction bearing of 250 degrees would be designated runway 25. Parallel runways are marked with an "L" or "R" to differentiate between them.
A continuous yellow line leading onto the runway marks the taxiway center line. The edges of the taxiway are sometimes marked with two continuous lines 6 inches apart. Taxiway holding lines are designated by two continuous lines and two dashed lines perpendicular to the centerline. Aircraft leaving a runway are not clear of the runway until they have passed this holding line.
The white striped threshold markings running perpendicular to the runway direction indicate the end of useable area of the runway for an aircraft. Yellow chevrons or white arrows pointing to the threshold indicate that the area is unsuitable for taxiing.
