G150 captain reports having to brake hard to avoid a high speed fire truck that cuts in front of his...

Narrative:

Part 91 empty leg landed iah RWY26L after dark. Issued taxi instruction via 'na to wc ...'without warning a lone fire truck (with red lights on) cut us off (coming left to right on wa). Both crew members saw this as I (pilot flying) braked to a stop. The fire truck made a wide 360 degree turn in front of us; departed the taxiway; turned off his lights and departed the area. I called ground for instructions and he responded with; 'sorry about that'.this is the 2nd time I have had to brake hard to avoid a collision with a fire truck at iah. Both times the fire trucks were on a taxiway; traveling at a high rate of speed; by themselves; and did not appear to be involved in any type of emergency response. Also; in both cases; there was no warning from ATC; and the fire trucks did not appear to be communicating with anyone on the radio.we see many service vehicles at iah; and they have all been vigilant and have given way to taxiing aircraft. The exception is the fire trucks. They do not give way to taxiing aircraft. They should also slow down. Both of these times I have had no warning from ATC; and have had to brake hard to avoid collision. I am more than happy to stop; give way or hold position for emergency vehicles; but heads up from ground would be great.

Original NASA ASRS Text

Title: G150 Captain reports having to brake hard to avoid a high speed fire truck that cuts in front of his aircraft without warning. The fire truck; with lights flashing makes a 360 in front of the G150 then departs and was apparently not responding to an emergency.

Narrative: Part 91 empty leg landed IAH RWY26L after dark. Issued taxi instruction via 'NA to WC ...'Without warning a lone fire truck (with red lights on) cut us off (coming left to right on WA). Both crew members saw this as I (pilot flying) braked to a stop. The fire truck made a wide 360 degree turn in front of us; departed the taxiway; turned off his lights and departed the area. I called ground for instructions and he responded with; 'sorry about that'.This is the 2nd time I have had to brake hard to avoid a collision with a fire truck at IAH. Both times the fire trucks were on a taxiway; traveling at a high rate of speed; by themselves; and did not appear to be involved in any type of emergency response. Also; in both cases; there was no warning from ATC; and the Fire trucks did not appear to be communicating with anyone on the radio.We see many service vehicles at IAH; and they have all been vigilant and have given way to taxiing aircraft. The exception is the Fire trucks. They do not give way to taxiing aircraft. They should also slow down. Both of these times I have had no warning from ATC; and have had to brake hard to avoid collision. I am more than happy to stop; give way or hold position for emergency vehicles; but heads up from Ground would be great.

Data retrieved from NASA's ASRS site 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.

Attributes
ACN	1246649
Time
Date	201503
Local Time Of Day	1801-2400
Place
Locale Reference	IAH.Airport
State Reference	TX
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Gulfstream G100/G150 (IAI 1125 Astra)
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Conflict Ground Conflict Critical

G150 captain reports having to brake hard to avoid a high speed fire truck that cuts in front of his aircraft without warning. The fire truck; with lights flashing makes a 360 in front of the G150 then departs and was apparently not responding to an emergency.