B727-200 MISINTERPRETED ARPT DIAGRAM AND CROSSED RWY 4L WITHOUT CLRNC. NO CONFLICT.

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PUSHED BACK FROM GATE FACING W. GND CTL CLRED US TO 'RWY 9L VIA TXWYS A; G; B; J.' BEGAN TAXI WITH L TURN ONTO TXWY A AND RIGHT ONTO TXWY G. LOOKING AT THE ARPT DIAGRAM; I SAW TXWY IDENTIFIER B OVERLAPPING THE RWY 9L PARALLEL TXWY AND THOUGHT TXWY B WAS THE PARALLEL. ALSO PASSING IN FRONT OF US FROM R TO L WAS AN ACR TAXIING ON THE PARALLEL (TXWY H) AND ACROSS RWY 4L ON HIS WAY TO TXWY J AND RWY 9L. HAVING MISINTERPRETED THE DIAGRAM AND SEEING THE ACR GOING THE SAME RTE I HAD MENTALLY PERCEIVED TO BE CORRECT; I FOLLOWED THE ACR ACROSS RWY 4L ON TXWY H. GND CTL DID NOT CATCH THE ERROR UNTIL WE WERE ALREADY ON RWY 4L. TO PREVENT THIS TYPE OF MISTAKE; I WOULD SUGGEST THAT COMMERCIAL CHART CHANGE THEIR METHOD OF LABELING ARPT DIAGRAMS BY: 1) DO NOT PLACE A LETTER IDENTIFIER SUCH THAT IT TOUCHES MORE THAN 1 TXWY; 2) FOR THE O'HARE DIAGRAM; MARK TXWY B WITH MORE B'S; AND 3) VERY IMPORTANTLY; IF A TXWY IS CURVED; THE LETTER IDENTIFIER SHOULD BE PERPENDICULAR TO THE CURVE TO MAKE TXWY IDENT MORE POSITIVE. SUPPLEMENTAL INFO FROM ACN 346382: COMPANY AND COMMERCIAL KEY PERSONNEL ARE BEING CONTACTED WITH SUGGESTION FOR FIX.