A TAXIING ACR MLG PASSES OVER THE HOLD SHORT LINE FOR RWY 8 AT ABQ. THE ACFT WAS AT TXWY A3 AND THE FO CLAIMS THAT THERE IS AN ARPT PROB WITH THE ILLUSION OF THE TXWYS AT C; A1; A2 AND A3 BEING SIMPLY EXITS FROM THE RAMP AND NOT ACCESS TXWYS TO THE RWY. SAYS THERE SHOULD BE WARNING SIGNS REGARDING A POSSIBLE RWY INCURSION IN THIS AREA.

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DURING TAXI FOR TKOF; CAPT TAXIED PAST HOLD SHORT LINE APPROX 10-12 FT. CALLED TWR AND TOLD THEM WE WERE READY FOR TKOF. NO TFC CONFLICTS. TWR CLRED US ONTO RWY AND SUBSEQUENT TKOF WAS UNEVENTFUL. PROB AROSE DUE TO 2 MAN COCKPIT (ADVANCED FMS) AND SHORT TAXI; ALONG WITH THE FACT THAT TXWY A IS PART ON SAME CONCRETE AS TERMINAL RAMP. FO WAS BUSY READYING COCKPIT FOR DEP AND READING CHKLIST. ARPT LAYOUT IS VERY CONFUSING. THERE IS NO BOUNDARY BTWN THE TERMINAL RAMP AND TXWY A. INCURSION OCCURRED AT TXWY A3. THE PERCEPTION IS THAT TXWYS C; A3; A2; AND A1 ARE EXITS FROM RAMP; NOT ONTO RWY 8/26 AT ABQ. THERE NEEDS TO BE A PHYSICAL BARRIER OR BETTER SIGNS DEMARKING TXWY A AND THE TERMINAL RAMP. AT THE VERY LEAST; SOME WARNING SIGNS AT TXWYS A1; A2; A3; AND C WARNING OF DANGER OF POSSIBLE RWY INCURSION DUE TO POOR DESIGN OF ARPT. PROCS SHOULD BE STUDIED FOR HIGHER WORKLOAD COCKPITS IN 2 MAN CREWS. MAYBE A PROC THAT REQUIRES THE ACFT TO BE STOPPED WHILE TAXIING WHEN DATA IS ENTERED IN FMS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: FO ADMITS TO BEING BUSY WITH THE CHKLIST DURING THE TAXI OUT. HE STATED THAT THE HOLD LINES WERE VISIBLE BUT FELT THAT THE ILLUSION THAT ONE EXPERIENCES ABOUT THE RAMP VERSUS THE RWY WAS CAUSAL. THE ACCESS TXWYS ARE VERY SHORT AND THE PERCEPTION IS THAT THOSE TXWYS ARE EXITS TO A PARALLEL TXWY WHICH; IN REALITY; IS RWY 8. HE DOESN'T KNOW IF THE CAPT FILED A COMPANY RPT OR NOT.