A320 FLC FOLLOWS ASSIGNED TAXI INSTRUCTIONS BUT MISSES RWY HOLD SHORT LINE; CAUSING E120 ON SHORT FINAL TO BE ISSUED A GAR.

Narrative

AFTER LNDG ON RWY 25L AND EXITING N ON TXWY P; MY ACFT X ENCROACHED ON THE HOLD LINE FOR RWY 25R. WHILE ROLLING OUT ON RWY 25L; TWR INSTRUCTED US TO PASS UP THE HIGHSPD TXWY AND CONTINUE DOWN TO TXWY P BEFORE EXITING. I EXITED N ON TXWY P; INTENDING TO HOLD SHORT OF RWY 25R; BUT DIDN'T REALIZE HOW LITTLE SPACE THERE ACTUALLY IS BTWN RWYS ON THIS PERPENDICULAR TXWY. TURNING ONTO THE TXWY; I MISTOOK THE HOLD LINE FOR RWY 25R NBOUND AS THE HOLD LINE FOR RWY 25L SBOUND AND ALLOWED THE ACFT TO START ACROSS THAT LINE. AT THAT POINT; I BELIEVED THAT THE ACFT WAS NOT FULLY CLR OF RWY 25L AND EVEN COMMENTED TO THE FO THAT I WAS MOVING FORWARD TO GET OFF THE RWY. BEFORE I REALIZED THAT IT WAS; IN FACT; THE HOLD LINE FOR RWY 25R AND BECAME FULLY STOPPED; THE ACFT HAD PARTIALLY CROSSED THE LINE; HOWEVER; DID NOT ENTER RWY 25R! SUBSEQUENTLY; LAX TWR DID INSTRUCT A COMMUTER ACFT Y ON FINAL APCH FOR RWY 25R TO 'GO AROUND.' SUPPLEMENTAL INFO FROM ACN 430850: AS WE SLOWED TO A WALKING SPD OF TAXI; I PICKED UP THE GND TAXI CHART AND BEGAN REVIEWING THE N TAXI RTE TO EXPECT. AS I GLANCED UP; I SAW WE WERE GETTING CLOSE TO THE RWY. AT THAT INSTANT; THE TWR CTLR SAID 'ACR X; CONFIRM HOLD SHORT RWY 25R.' I RESPONDED 'HOLDING SHORT OF RWY 25R.' WE STOPPED SHORT OF THE RWY ABOUT 10-15 FT SHORT OF THE EDGE OF THE RWY. THE TWR CTLR ISSUED A GAR TO THE LNDG BRASILIA ON RWY 25R.