B737-800
Flight Crew Air Transport Pilot (ATP)
Confusion; Communication Breakdown
Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Runway
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance; Flight Crew Became Reoriented; Flight Crew FLC complied w / Automation / Advisory
Airport; Environment - Non Weather Related; Procedure
Cleared to taxi K; B; M to cross 4L approach end. At the intersection of Taxiway B and M we made query to Tower as to direction from this point. We were cleared from Taxiway M on to Runway 14/32 and hold short of Runway 4R. As we turned onto Runway 14/32 we missed the visual hold short line and did not penetrate Runway 4R. I was not familiar with the visual hold line. I am used to the standard hold short line and was distracted by trying to determine our transition route from Runway 14/32 on to Runway 4R.
[Narrative #2 contained no additional information.]
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.