On 15 October 2022 an airport authority vehicle entered an active runway without clearance with a Boeing 737-8 on short final, which was instructed to go around and did so. The experienced driver involved had correctly read back a clearance to remain at the holding point but did not stop. It was found that the visual cues available from airport signage were not adequately salient in this situation, which was contributory. Drivers were found to have routinely crossed active runways to save time instead of using the available perimeter road as per airport authority directives.