Gulfstream G100/G150 (IAI 1125 Astra)
Flight Crew Air Transport Pilot (ATP)
Conflict Ground Conflict; Critical
Flight Crew Took Evasive Action
Human Factors
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.
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.