B767-300 and 300 ER
Flight Crew Air Transport Pilot (ATP)
Situational Awareness; Communication Breakdown
ATC Issue All Types; Conflict Ground Conflict; Less Severe; Deviation / Discrepancy - Procedural Clearance
Flight Crew Took Evasive Action
Human Factors; Procedure
We were taxiing from the deice pad to Runway 15R. We were initially instructed to taxi via taxiway U T E hold short of taxiway P. Then our instructions were U hold short of P for the Embraer taxiing left to right. Then we were instructed to taxi via taxiway U P and hold short of taxiway D. We held short for a minute or so; then we were instructed to taxi to Runway 15R via taxiway P. I pointed out an aircraft on short final to Runway 10 and kept a watch on it as it landed assuming Tower had told him not to exit at taxiway D; but staying vigilant all the same. As we started rolling by taxiway D I noticed the aircraft; an Embraer 145; begin to turn towards us on taxiway D. I called him out again to the Captain and was about to hit the brakes myself. Then I saw the Embraer come to a stop on the runway. I queried ground about who was giving way to whom; but never received a reply. As the Embraer had stopped we continued our taxi with no further incident.
B767 Captain reported a ground conflict developed at BWI airport following unclear ATC clearances.