Narrative:

Aircraft X called for taxi out of the terminal ramp. I issued instructions to the pilot(s) to taxi runway 15 via alpha and hold short runway 8; landing traffic. I heard the pilot read back hold short runway 8. There were 2 aircraft on final when the taxi began; one near a mile final and another aircraft estimated around a 3 mile final. After the first aircraft began rolling out and passed aircraft X; I noticed that aircraft X passed the hold bar and began to enter the runway. I transmitted 'aircraft X hold position' and the pilot(s) complied. The controller-in-charge (controller in charge) told the local controller to issue a go-around to the aircraft on final; estimated around a mile final. The go around was issued in a timely matter; and there was no doubt in my mind that had the aircraft on final not gone around that there would have been a much worse incident. After the aircraft executed a missed approach; I received permission to cross the runway; and issued instructions to aircraft X to do so. After aircraft X was across I issued a brasher warning per instructions from the controller in charge. I am unsure why the pilot crossed the hold bar; and I'm not aware if any of the language I used in my instructions to aircraft X gave the pilot(s) the idea that they could cross the runway.the position of the terminal relative to the runway continues to remain dangerous to our operation. Issuing taxi instructions to an aircraft in a non-movement area that close to the runway is both confusing and a high risk to pilots. Assuming the pilot read back my instructions correctly; I don't know what would have led him/her to believe that they had permission to cross the runway. I do believe that the taxi route and runway/terminal proximity are at the root of the incident.

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Original NASA ASRS Text

Title: BUR Tower Controller reported an aircraft crossed the hold short line of a runway while taxiing without clearance. An aircraft was forced to go-around as a result.

Narrative: Aircraft X called for taxi out of the terminal ramp. I issued instructions to the pilot(s) to taxi runway 15 via alpha and hold short runway 8; landing traffic. I heard the pilot read back hold short runway 8. There were 2 aircraft on final when the taxi began; one near a mile final and another aircraft estimated around a 3 mile final. After the first aircraft began rolling out and passed Aircraft X; I noticed that Aircraft X passed the hold bar and began to enter the runway. I transmitted 'Aircraft X hold position' and the pilot(s) complied. The Controller-in-Charge (CIC) told the local controller to issue a go-around to the aircraft on final; estimated around a mile final. The go around was issued in a timely matter; and there was no doubt in my mind that had the aircraft on final not gone around that there would have been a much worse incident. After the aircraft executed a missed approach; I received permission to cross the runway; and issued instructions to Aircraft X to do so. After Aircraft X was across I issued a brasher warning per instructions from the CIC. I am unsure why the pilot crossed the hold bar; and I'm not aware if any of the language I used in my instructions to Aircraft X gave the pilot(s) the idea that they could cross the runway.The position of the terminal relative to the runway continues to remain dangerous to our operation. Issuing taxi instructions to an aircraft in a non-movement area that close to the runway is both confusing and a high risk to pilots. Assuming the pilot read back my instructions correctly; I don't know what would have led him/her to believe that they had permission to cross the runway. I do believe that the taxi route and runway/terminal proximity are at the root of the incident.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.