Figure 14-5. (A) Relocated runway threshold drawing. (B) Relocated threshold for Runway 36 at Joplin Regional Airport (JLN).  Runway Safety Area Boundary Sign  Runway Safety Area  Runway Holding Position Sign  Some taxiway stubs also have a runway safety area boundary  sign that faces the runway and is visible to you only when  exiting the runway. This sign has a yellow background with  black markings and is typically used at towered airports  where a controller commonly requests you to report clear of  a runway. This sign is intended to provide you with another  visual cue that is used as a guide to determine when you are  clear of the runway safety boundary area. The sign shown in  Figure 14-8  is what you would see when exiting the runway at  Taxiway Kilo. You are out of the runway safety area boundary  when the entire aircraft passes the sign and the accompanying  surface painted marking.  The runway safety area (RSA) is a defined surface  surrounding the runway prepared, or suitable, for reducing  the risk of damage to airplanes in the event of an undershoot,  overshoot, or excursion from the runway. The dimensions  of the RSA vary and can be determined by using the  criteria contained within AC 150/5300-13, Airport Design,  Chapter 3. Figure 3-1 in AC 150/5300-13 depicts the RSA.  Additionally, it provides greater accessibility for firefighting  and rescue equipment in emergency situations.  The RSA is typically graded and mowed. The lateral  boundaries are usually identified by the presence of the  runway holding position signs and markings on the adjoining  taxiway stubs. Aircraft should not enter the RSA without  making sure of adequate separation from other aircraft during  operations at uncontrolled airports.  [Figure 14-7]  Noncompliance with a runway holding position sign may  result in the FAA filing a Pilot Deviation against you. A  14-6  A  B  36