A320
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 1
Situational Awareness
ATC Issue All Types; Conflict Ground Conflict; Less Severe; Deviation / Discrepancy - Procedural Clearance; Ground Incursion Runway
Air Traffic Control Provided Assistance
Human Factors
Maintenance truck; needed five minutes on Runway XXL and was granted this access while holding short of Runway XY on Runway XXL. Meanwhile; Aircraft X began taxiing to Runway XXL while an inbound was about 10 miles out for Runway XY. The South radar controller briefly called to coordinate something; but then hung up and this got the Trainee and I in a brief discussion about what APREQ [Approval Request] they may have been considering. We were using the correct memory aid to show that Runway XXL was occupied and unavailable; however; our scan broke down and Aircraft X was cleared for takeoff while taxiing on Taxiway D towards D1; as the Runway XY lander was already crossing the Runway XY/ XXL intersection. Maintenance Truck; then reported exiting Runway XXL as he heard our clearance and saw the A320 turning from D1 to begin taking the runway. I quickly verified that Maintenance Truck had exited Runway XXL; and he confirmed this immediately and then Aircraft X continue lining up on Runway XXL and he then commenced his takeoff roll. Training on local control was in progress and I was the OJT instructor.I could have refrained from discussing a theoretical APREQ and maybe this would helped the Trainee and I from having a degraded runway scan that is obviously much more important.
I was staffing a position while training was being conducted on LC and a Developmental worked GC/CD. The session had been fairly steady with crossing Runway ops and LUAW [Line Up And Wait] being utilized. As traffic died down; I went to the computer at the SUP position to reference ART [time and position tracker]. As I did this I heard the trainer on local make a call to verify that Maintenance Vehicle was holding short of Runway XXL. I looked back to the approach end of the runway and saw that Aircraft X was entering the runway environment. I then saw Maintenance Vehicle exiting Runway XXL at TWY A1. The vehicle had exited the runway environment prior to the aircraft starting takeoff roll. Continue vigilance while training is taking place. The busier traffic had been handled well; but as the perceived lull came; the error occurred.
Tower controllers reported a runway incursion with a departure and a vehicle.