A330
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Deviation / Discrepancy - Procedural Clearance; Ground Incursion Taxiway
Flight Crew Became Reoriented
Airport; Procedure; Human Factors
Taxiing out of LFPG our instructions were cleared via A to N turn onto B Then BD14 D to Y3 holding point Runway 09R. The First Officer and I had briefed the route we thought we would use; and then talked about the clearance we received. They were very similar except we would use D instead of B to get to Y3. As we taxied up N we received our weight and balance about that time an A340 under tow pulled on ahead of us; this created a little confusion because we had not heard him receive clearance to enter the taxiway. As we came up to Taxiway B we turned on left onto B. As we did I realized that BD14 was basically straight ahead and no turn was needed onto B taxiway.As I stopped the aircraft and was about to call Ground Control they advised us to hold our position. At that intersection of B and BD14 there is no signage at all. If you come from the other direction on the upper end of that taxiway there [are] painted numbers on the ground; but not from the direction we were coming from. It is very poorly marked! Major cause of this is the poor signage along with a very non-standard taxi clearance. The signage at the intersection of B where it meets with N is good but the lack of signage of BD14 and where it is from that direction is not there; leading to great confusion. Have Paris put signage out or paint on the taxiway with an arrow of where BD14 is. Coming off the runway to the gates it is painted on the north side showing BD14 on Taxiway D. It is not when coming from the south to the east runways.
A330 flight crew reported they were confused by poor signage on taxi out at LFPG.