Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 11
Communication Breakdown; Distraction; Situational Awareness
ATC Issue All Types; Conflict Ground Conflict; Less Severe; Ground Incursion Runway
Flight Crew Executed Go Around / Missed Approach
Human Factors
An Airport Vehicle asked if they could get onto Runway XXL to clear signs. I clarified if they needed go to the approach end of Runway XYR or the approach end of Runway XXL. They stated the approach end of Runway XYR. I instructed the Airport Vehicle to proceed onto the approach end of Runway XYR; and hold short of Runway XZC at all times. I received a correct read back of the hold short instructions for Runway XZC. A short time later; I attempted to reach out to the Airport Vehicle to reiterate the hold short instructions and ensure they would give way to an Airbus that I was initially going to take down Runway XYR. I did not get an answer from the Airport Vehicle. I then changed the taxi instructions for Aircraft Y to stay on the taxiway; cross Runway XZL and hold short of Runway XZC. Once I ensured that Aircraft Y was holding short of Runway XZC; and the Airport Vehicle did not appear to be moving forward; I looked down to finish processing some flight progress strips. At that time; the Supervisor on the Watch Desk asked to verify that the Airport Vehicle was holding short Runway XZC. I said he was supposed to be; keyed up and reiterated the hold short instructions. The Supervisor instructed Local Control to issue a go around for Aircraft X. The Airport Vehicle appeared to just cross the runway edge of Runway XZC on Runway XYR. They immediately reversed and exited Runway XZC; remaining on Runway XYR. Soon afterwards; I issued the brasher warning.Next time I will ensure I reiterate the hold short instructions when a vehicle is in close proximity to the active runway.
An Airport Vehicle was operating on Runway XYR; a closed runway; and instructed to hold short of Runway XZC. Aircraft X was on a short final for Runway XZC; when I noticed the Airport Vehicle was entering into Runway XZC on Runway XYR. I instructed Local Control to send Aircraft X around; which they did.More vigilance is recommended from airport vehicles.
ATC Controllers reported an airport vehicle did not hold short of the runway for landing traffic.