CL65 FLT CREW DEP FROM CYUL IS CONFUSED BY GND CTLR CLRNC AND WITH ARPT DIAGRAM AND MAKES WRONG TXWY TURN.

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TAXIING OUT OF MONTREAL AT NIGHT FROM GATE; WE WERE GIVEN THE TAXI CLRNC; 'TAXI E LANE; N RAMP AND HOLD SHORT OF TXWY D.' ONCE WE WERE SHORT OF TXWY D; WE CONTACTED GND AND WERE GIVEN THE CLRNC; 'TAXI A4; TXWY A; CLRED TO CROSS RWY 28; CONTACT TWR ON 119.9; HOLDING SHORT OF RWY 24L.' THE CLRNC WAS READ BACK AND WE TAXIED ACROSS TXWY A AND REALIZED WE MISSED TXWY A AND STOPPED THE ACFT IMMEDIATELY; SHORT OF RWY 24L ON A4. AT THAT TIME; GND TOLD US WE MISSED TXWY A; AND WE SAID WE COULD DO A 180 DEGS IF IT WAS ALRIGHT WITH THEM. THEY RESPONDED YES. WE DID A 180 DEGS WITH A R TURN ON TXWY A AND TAXIED TO RWY 24L WITHOUT FURTHER INCIDENT. FROM THE START OF THE TAXI; WE BOTH DISCUSSED THE PROBS WITH THE ARPT DIAGRAM AND THE CONFUSION OF WHERE WE SHOULD HOLD SHORT IN RELATION TO TXWYS D; A; A4 AND AM. AS WE PASSED TXWY D; I SAID; 'THIS IS TXWY D; TXWY A IS NEXT TURN L.' THE CAPT MADE A COMMENT ON HOW DIAGRAMS ARE DIFFICULT. I THEN LOOKED DOWN AT MY CHARTS TO MAKE SURE WHAT I TOLD HIM WAS RIGHT; AND THAT'S WHEN WE BOTH MISSED TXWY A. I THINK WE MADE OUR BEST EFFORT TO COMPLY WITH OUR TAXI CLRNC. THE #1 CONTRIBUTING FACTOR WAS THE LACK OF TXWY CTRLINE MARKINGS; WHICH ARE INCREDIBLY HARD TO SEE AT NIGHT AND THE TXWY LIGHTED SIGNS AND THE CONFUSING TAXI CLRNC. NOWHERE ON ANY CHART IS THE E LANE; OR THE N RAMP DEPICTED. ALL THESE FACTORS LEAD TO CONFUSION; DISCUSSION; SECOND GUESSING; AND CONSTANT INTERP OF THE CHARTS WHICH SETS YOU UP FOR PROBS.