Pilatus Undifferentiated
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Rejected Takeoff; Flight Crew Took Evasive Action
Human Factors
Tower was closed at Reading and I was about to takeoff from Runway 13. I knew a Citation had just landed on Runway 36 so I announced I was taking off Runway 13 twice; once as I was entering the runway and once when I started the takeoff roll. I noticed the Citation on Taxiway Delta as I was in the takeoff roll. The Citation continued to cross Runway 13 as I was taking off. I aborted the takeoff and got off on Taxiway Foxtrot. The Citation then called and announced they were clear of the runway.  Be aware aircraft may not be on the right frequency at RDG and/or may not be making announcements.
Pilatus pilot reported rejecting the takeoff when a Citation taxied across the runway ahead of him.