A320 captain reports being cut off by an airport emergency vehicle at ord with no lights flashing.

Attributes
ACN	828852
Time
Date	200903
Local Time Of Day	0001-0600
Place
Locale Reference	ORD.Airport
State Reference	IL
Aircraft 1
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Experience	Flight Crew Last 90 Days 250 Flight Crew Total 12500 Flight Crew Type 900
Events
Anomaly	Conflict Ground Conflict Critical Deviation - Procedural Published Material / Policy

Narrative:

Transiting A10 toward taxiway a at approximately 10 KTS; we were blatantly cut off by a ground vehicle that appeared to be am ambulance with markings of chicago fire department. This vehicle was cruising east on the access road at least 30 mph. He came right in front of us; as if he had the right-of-way; and we had to apply a significant amount of braking. If not; we may have been close enough to hit the vehicle.

Original NASA ASRS Text

Title: A320 Captain reports being cut off by an airport emergency vehicle at ORD with no lights flashing.

Narrative: Transiting A10 toward Taxiway A at approximately 10 KTS; we were blatantly cut off by a ground vehicle that appeared to be am ambulance with markings of Chicago Fire Department. This vehicle was cruising east on the access road at least 30 MPH. He came right in front of us; as if he had the right-of-way; and we had to apply a significant amount of braking. If not; we may have been close enough to hit the vehicle.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.