CAPT OF A DORNIER DO328 TAXIING TO PARKING STOPPED QUICKLY TO AVERT A COLLISION WITH A BRITISH JETSTREAM 31 TAXIING OUT WHEN THE 2 ACFT MET AT A TXWY INTXN AT THE SAME TIME. THE JETSTREAM ALSO STOPPED ABRUPTLY.

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WE LANDED AT PIT AND WERE CLRED TO TAXI TO THE RAMP BY THE TWR. WE SAW TFC TAXIING OUT FROM THE GATES THAT WE KNEW WOULD BE ON A TXWY WE WOULD HAVE TO CROSS; BUT WE WERE WELL AHEAD OF THE OTHER ACFT. TO BE SURE THEY WOULDN'T BE BLOCKED BY US; THE CAPT SAID HE TAXIED FASTER THAN NORMAL - NOT EVEN AN UNCOMFORTABLE SPD; JUST A LITTLE FASTER THAN NORMAL. AS WE TURNED TO CROSS THE TXWY THAT WAS IN QUESTION; WE HAD TO ABRUPTLY STOP TO AVOID A COLLISION. WE WERE CLRED WHILE WE WERE ON TXWY B5 TO TXWY B TO THE RAMP. TXWY B5 IS AFTER WE SAW THE CONFLICTING ACFT JUST BEGINNING TO COME UP TXWY Y; N. THE CONFLICT OCCURRED AT TXWY C4/INTXN C. THIS CONFLICT AROSE DUE TO 2 REASONS: 1) PRIMARILY LACK OF COM BTWN TWR AND GND. (THE J31 WAS UNDER GND CTL; WE WERE UNDER TWR). 2) SECONDARILY; THE J31 WAS TAXIING TOO FAST. LIKE I STATED BEFORE; WE ALREADY HAD DISTANCE ON THE ACFT AND THE CAPT TRIED TO SAFELY PUT MORE DISTANCE BTWN US. WHEN WE BOTH STOPPED; OUR STOP WAS NORMAL. THE J31'S STOP LOOKED MUCH MORE ABRUPT; THE ACFT LURCHED IN AN EXAGGERATED MANNER DURING THE STOP.