Medium Large Transport; Low Wing; 2 Turbojet Eng
Confusion; Communication Breakdown
ATC Issue All Types; Deviation / Discrepancy - Procedural Clearance; Ground Incursion Runway
Air Traffic Control Issued New Clearance; Air Traffic Control Issued Advisory / Alert; Flight Crew FLC complied w / Automation / Advisory; Flight Crew Became Reoriented
Airport; Environment - Non Weather Related; Human Factors; Procedure
We were behind another carrier. [They were] already passed the [Runway 4R] ILS critical hold short. The other carrier took the runway and we were told to 'Hold short the visual hold short line.' Before we realized the visual hold short line is the same as the runway hold short line we had already crossed it. Instead of using the 'visual hold short line' just use 'hold short line.'
Taxied past the hold line on Runway 14 before realizing the hold line is coincident with visual hold line. [We needed] greater vigilance on airport diagram which indicated visual hold point. If Tower had specified ILS hold point it is clearly marked and requires no correlation in phraseology.
An aircraft taxied beyond the BOS Runway 4R Visual Hold Short Line on Runway 14/32 because the crew did not recognized it as the Runway Hold Short Line.