Date: 201905
Local time of day: 0601-1200
Location: ZZZ.Airport, US
Flight conditions: VMC
Aircraft: EMB ERJ 145 ER/LR
Operator: Air Carrier
Operating under: Part 121
Mission: Passenger
Flight phase: Taxi
ATC / advisory: Ground ZZZ
Reporter organization: Air Carrier
Reporter function: First Officer; Pilot Flying
Reporter qualification: Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Human factors: Situational Awareness; Time Pressure
Second reporter function: Pilot Flying; Captain
Anomaly: Conflict Ground Conflict; Critical
Detector: Person Flight Crew
When detected: Taxi
Result: Flight Crew Took Evasive Action
Contributing factors: Human Factors
Primary problem: Human Factors

Narrative: Upon arrival to ZZZ exited Runway XXL onto taxiway BRAVO to the assigned gate. While taxiing around intersections Bravo and Alpha X; we both observed the vehicles on each side of the intersections stopped except one of them. One service vehicle was approaching the intersection at a high speed; it seemed to slow down and initially stopped as we continue to taxi. Suddenly; the vehicle from our right continue his path across the service road and in front of us without acknowledging we were taxiing. Immediately; the Captain reacted quickly to make an immediate stop to avoid a collision with this food service vehicle. The incident were reported to ZZZ Ground Control. We stayed at our current position to check for any injuries in the passenger cabin and in addition; the Captain made an announcement to the passengers to informed the situation. After assessing the situation and determine it was safe to move again; we observed the driver of this vehicle driving abnormally around near planes and gates on the south port of the terminal. Wreckless driving on service road by one of the company's food service trucks which was unable to stop and stayed at his current position; instead proceeding across to the interception and not yield to the planes which has the right of way. Distraction or careless could be a factor on his part that led to an evasive action by the crew. We immediately reported the incident to Ground Control which seems unable to track and contact vehicles on their service roads at the airport. It is imperative that everyone follow rules for a safe operation on the airfield and actions must be taken to avoid situations like this ones.


Second narrative: After landing in ZZZ during taxi in operations a service vehicle (company) initially stopped at the vehicle crossing area on taxiway B near AX intersection. After an initial rolling stop the vehicle proceeded to continue thru the intersection and did not yield to our plane. Due to an imminent collision I applied the brakes in an aggressive manner. We identified the vehicle (company 9449) number and reported the event to the ZZZ Ground Controller. While stopped I made an announcement to the passengers about the aggressive maneuver as well as calling the Flight Attendant to inquire about any injuries or issues. We reported no injuries to the GND controller and continued taxi to our gate without further incident. The vehicle did drive on the designated roads during our observations however we observed the vehicle driving erratically through the gate area around the southern C gates and reported that to the GND controller too. Ground service vehicle did not yield to aircraft. Additional safety enhancements for ground vehicle (i.e. traffic signals).


Synopsis: EMB-145 Flight Crew reported a critical ground conflict with a service truck.