BNSF MAINTENANCE OF WAY OPERATING RULES
COMPLETE -QUESTION EXAM BANK
LATEST UPDATE - THIS YEAR
PART 1: DEFINITIONS & ACRONYMS (Questions 1-50)
1. Track warrant control- method to authorize train movements or protect men
and equipment on a main track within specified limits in a territory designated by
the timetable.
Answer: TWC
Rationale: TWC is the formal abbreviation for Track Warrant Control, a system used to
authorize train movements and protect workers on main tracks .
2. When used in relation to a manually operated switch or derail, a lock that can be
locked or unlocked only by the craft or group of workers applying the lock.
Answer: Effective locking device
Rationale: This ensures only the workers who placed the lock can remove it, providing
exclusive protection for their work area .
3. A track extending through yards and between stations that must not be
occupied without authority or protection.
,Answer: Main Track
Rationale: Main tracks require specific authorization or protection before occupancy to
ensure safe train operations .
4. Two or more main tracks that are used according to the timetable.
Answer: Multiple Main Tracks
Rationale: These tracks are designated for train movements as specified in the timetable,
with defined currents of traffic .
5. A track connected to the main track and used for meeting or passing trains.
Location of sidings are shown in timetable.
Answer: Siding
Rationale: Sidings provide a place for trains to clear the main track for meeting or passing
other trains .
6. Yard Limits
Answer: YL
Rationale: YL is the standard abbreviation for Yard Limits on BNSF forms and
communications .
7. West Crossover
Answer: WXO
,Rationale: WXO is used to identify west crossover locations in track warrants and
directives .
8. West Siding Switch
Answer: WSS
Rationale: WSS identifies the west end switch of a siding on forms and communications .
9. Westbound Controlled Signal
Answer: WBCS
Rationale: WBCS identifies signals controlling westbound movements .
10. South Crossover
Answer: SXO
Rationale: SXO is the abbreviation for south crossover locations .
11. South Siding Switch
Answer: SSS
Rationale: SSS identifies the south end switch of a siding .
12. Southbound Controlled Signal
, Answer: SBCS
Rationale: SBCS identifies signals controlling southbound movements .
13. Restricted Limits
Answer: RL
Rationale: RL is the abbreviation for Restricted Limits, a designated area where movements
are made at restricted speed .
14. North Crossover
Answer: NXO
Rationale: NXO identifies north crossover locations on BNSF track diagrams .
15. North Siding Switch
Answer: NSS
Rationale: NSS identifies the north end switch of a siding .
16. Northbound Controlled Signal
Answer: NBCS
Rationale: NBCS identifies signals controlling northbound movements .
COMPLETE -QUESTION EXAM BANK
LATEST UPDATE - THIS YEAR
PART 1: DEFINITIONS & ACRONYMS (Questions 1-50)
1. Track warrant control- method to authorize train movements or protect men
and equipment on a main track within specified limits in a territory designated by
the timetable.
Answer: TWC
Rationale: TWC is the formal abbreviation for Track Warrant Control, a system used to
authorize train movements and protect workers on main tracks .
2. When used in relation to a manually operated switch or derail, a lock that can be
locked or unlocked only by the craft or group of workers applying the lock.
Answer: Effective locking device
Rationale: This ensures only the workers who placed the lock can remove it, providing
exclusive protection for their work area .
3. A track extending through yards and between stations that must not be
occupied without authority or protection.
,Answer: Main Track
Rationale: Main tracks require specific authorization or protection before occupancy to
ensure safe train operations .
4. Two or more main tracks that are used according to the timetable.
Answer: Multiple Main Tracks
Rationale: These tracks are designated for train movements as specified in the timetable,
with defined currents of traffic .
5. A track connected to the main track and used for meeting or passing trains.
Location of sidings are shown in timetable.
Answer: Siding
Rationale: Sidings provide a place for trains to clear the main track for meeting or passing
other trains .
6. Yard Limits
Answer: YL
Rationale: YL is the standard abbreviation for Yard Limits on BNSF forms and
communications .
7. West Crossover
Answer: WXO
,Rationale: WXO is used to identify west crossover locations in track warrants and
directives .
8. West Siding Switch
Answer: WSS
Rationale: WSS identifies the west end switch of a siding on forms and communications .
9. Westbound Controlled Signal
Answer: WBCS
Rationale: WBCS identifies signals controlling westbound movements .
10. South Crossover
Answer: SXO
Rationale: SXO is the abbreviation for south crossover locations .
11. South Siding Switch
Answer: SSS
Rationale: SSS identifies the south end switch of a siding .
12. Southbound Controlled Signal
, Answer: SBCS
Rationale: SBCS identifies signals controlling southbound movements .
13. Restricted Limits
Answer: RL
Rationale: RL is the abbreviation for Restricted Limits, a designated area where movements
are made at restricted speed .
14. North Crossover
Answer: NXO
Rationale: NXO identifies north crossover locations on BNSF track diagrams .
15. North Siding Switch
Answer: NSS
Rationale: NSS identifies the north end switch of a siding .
16. Northbound Controlled Signal
Answer: NBCS
Rationale: NBCS identifies signals controlling northbound movements .
