BNSF Conductor Final Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: Note: Refer to ABTH 101.13 for locomotive brake test requirements after
changing operating
Answer:
ends of a locomotive consist. 101.6 Locomotive Air Brake Test A
,BNSF Conductor Final Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: B. Locomotive Air Brake Test Procedures
Answer:
Note: If necessary, apply hand brake(s) to secure consist before beginning brake test.
If a
locomotive in consist has a hand brake applied, observe only the pistons at the
opposite end
from
the hand brake on that locomotive to determine if brakes apply and release.
Observe one side of the multiple-unit consist, from a ground position, to determine
all
locomotive brakes apply and release as specified in each step below:
1. With the independent and automatic brake valve handles in RELEASE position,
apply the
independent brake.
2. After observing brakes apply on each locomotive, release the independent brakes.
3. When brakes are released on all locomotives, make a 10 psi brake pipe reduction
using the
automatic brake valve.
4. After brakes apply on all locomotives, actuate and observe independent brakes
release on all
locomotives. 101.6 Locomotive Air Brake Test B1
,BNSF Conductor Final Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: 5. Reduce brake pipe pressure an additional 10 psi with the automatic brake
valve and
Answer:
determine all locomotive brakes reapply.
6. Cut out the automatic brake valve.
7. Observe gauges to verify that equalizing reservoir indicates no leakage and that
brake pipe
leakage does not exceed 5 psi per minute.
Q: 8. Move automatic brake valve handle to RELEASE position and cut the brake
valve in.
Answer:
9. Determine that all brakes release.
10. Fully apply independent brakes upon successful completion of this test. 101.6
Locomotive Air Brake Test B2
, BNSF Conductor Final Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: Ensure that air pressures are as follows for freight locomotives
Answer:
Main reservoir pressure is 120 to 140 psi.
Locomotive brake cylinder pressure is:
a. Switch locomotives with 10- or 11-inch brake cylinders-35 psi
b. Switch locomotives with 9-inch brake cylinders-45 psi
c. Locomotives with clasp type brake shoe rigging (2 shoes per wheel)-45 psi
d. Locomotives with single shoe per wheel brake rigging-72 psi. Note: Foreign line
locomotives
may require different main reservoir and independent brake cylinder pressures.
Brake pipe pressure is:
a. Yard or Freight service - 90 psi
b. Trains consisting entirely of business cars or passenger equipment-105 psi 101.7
Standard
Air Pressures
Latest 2026 Update
Q: Note: Refer to ABTH 101.13 for locomotive brake test requirements after
changing operating
Answer:
ends of a locomotive consist. 101.6 Locomotive Air Brake Test A
,BNSF Conductor Final Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: B. Locomotive Air Brake Test Procedures
Answer:
Note: If necessary, apply hand brake(s) to secure consist before beginning brake test.
If a
locomotive in consist has a hand brake applied, observe only the pistons at the
opposite end
from
the hand brake on that locomotive to determine if brakes apply and release.
Observe one side of the multiple-unit consist, from a ground position, to determine
all
locomotive brakes apply and release as specified in each step below:
1. With the independent and automatic brake valve handles in RELEASE position,
apply the
independent brake.
2. After observing brakes apply on each locomotive, release the independent brakes.
3. When brakes are released on all locomotives, make a 10 psi brake pipe reduction
using the
automatic brake valve.
4. After brakes apply on all locomotives, actuate and observe independent brakes
release on all
locomotives. 101.6 Locomotive Air Brake Test B1
,BNSF Conductor Final Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: 5. Reduce brake pipe pressure an additional 10 psi with the automatic brake
valve and
Answer:
determine all locomotive brakes reapply.
6. Cut out the automatic brake valve.
7. Observe gauges to verify that equalizing reservoir indicates no leakage and that
brake pipe
leakage does not exceed 5 psi per minute.
Q: 8. Move automatic brake valve handle to RELEASE position and cut the brake
valve in.
Answer:
9. Determine that all brakes release.
10. Fully apply independent brakes upon successful completion of this test. 101.6
Locomotive Air Brake Test B2
, BNSF Conductor Final Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: Ensure that air pressures are as follows for freight locomotives
Answer:
Main reservoir pressure is 120 to 140 psi.
Locomotive brake cylinder pressure is:
a. Switch locomotives with 10- or 11-inch brake cylinders-35 psi
b. Switch locomotives with 9-inch brake cylinders-45 psi
c. Locomotives with clasp type brake shoe rigging (2 shoes per wheel)-45 psi
d. Locomotives with single shoe per wheel brake rigging-72 psi. Note: Foreign line
locomotives
may require different main reservoir and independent brake cylinder pressures.
Brake pipe pressure is:
a. Yard or Freight service - 90 psi
b. Trains consisting entirely of business cars or passenger equipment-105 psi 101.7
Standard
Air Pressures
