Transit Railcar Maintenance Technician
Certification Practice Exam 2026 | Questions
with Correct Answers & Detailed Rationales |
Railcar Brake, Truck, Wheel & Electrical
Systems Study Guide
Note: Specific numeric condemnation limits vary by transit agency rulebook, AAR
standards, OEM manual, and FRA/state oversight requirements. Where a number is
given, it reflects typical industry practice — always verify against the controlling
authority for your property.
SECTION 1: SAFETY, PPE, BLUE FLAG & REGULATORY COMPLIANCE (Q1–12)
Question 1
A technician must perform maintenance under a railcar that is sitting on a powered
track. Which protective measure must be established before the technician goes
under the car?
A) A wheel chock placed on the leading axle only
B) Blue flag / blue signal protection applied by a qualified employee
C) The car's hand brake applied and the technician's partner watching the cab
D) A radio call to the control center stating the technician's location
Correct Answer: B
Rationale: Blue flag (or blue signal) protection is the required method for protecting
workers on, under, or between rail equipment. The blue signal must be applied by a
qualified employee and cannot be removed by anyone other than the person who
applied it (or their designated relief). Wheel chocks, hand brakes, and radio
,notifications are supporting measures but do not substitute for blue signal protection
under FRA/transit roadway worker protection rules.
Question 2
Which OSHA regulation governs lockout/tagout procedures when servicing railcar
equipment with stored energy?
A) 29 CFR 1910.146
B) 29 CFR 1910.147
C) 29 CFR 1910.140
D) 29 CFR 1910.132
Correct Answer: B
Rationale: 29 CFR 1910.147, "The Control of Hazardous Energy (Lockout/Tagout),"
governs the servicing and maintenance of machines and equipment where
unexpected energization or release of stored energy could cause injury. 1910.146
covers confined spaces; 1910.140 covers personal fall protection; 1910.132 covers
PPE.
Question 3
A technician is preparing to work inside a railcar's HVAC plenum that has limited
egress and is not designed for continuous occupancy. This space is best classified
as:
A) A permit-required confined space
B) A non-permit confined space only if ventilation is running
C) An exempt maintenance area
D) A Class I Division 1 location
Correct Answer: A
Rationale: A permit-required confined space meets one or more of: contains a
hazardous atmosphere, contains material that could engulf, has an internal
configuration that could trap or asphyxiate, or contains any other recognized serious
safety or health hazard. Railcar plenums, sumps, and underfloor voids frequently
,qualify. Entry requires atmospheric testing, an entry permit, an attendant, and rescue
provisions under 29 CFR 1910.146.
Question 4
Which federal regulation contains the brake system safety standards applicable to
freight railcars in interchange service?
A) 49 CFR Part 215
B) 49 CFR Part 229
C) 49 CFR Part 232
D) 49 CFR Part 674
Correct Answer: C
Rationale: 49 CFR Part 232 governs brake system safety standards, including brake
tests, piston travel limits, and single car air brake tests. Part 215 covers freight car
safety standards (wheels, axles, bearings, couplers). Part 229 covers locomotive
safety standards. Part 674 is the FTA State Safety Oversight rule for transit.
Question 5
A technician discovers a cracked side frame during a routine inspection. Under 49
CFR Part 215, this defect is best classified as:
A) A non-complying condition requiring repair at the next scheduled shop visit
B) A defect that renders the car unsafe for service and requires it be removed from
service
C) A reportable condition only if the crack exceeds 1 inch
D) A condition to be documented but not acted upon
Correct Answer: B
Rationale: A cracked side frame is a safety defect that renders the car unsafe for
continued service. Under FRA freight car safety standards, such a defect requires the
car to be removed from service and repaired before it can be moved in revenue or
interchange service. Cracked side frames can lead to truck collapse and derailment.
, Question 6
When jacking a railcar to replace a wheel set, what is the minimum required support
method once the car is raised?
A) The hydraulic jack alone, provided it is rated for the load
B) Approved safety stands or blocking capable of supporting the load, positioned so
the load is not supported by the jack alone
C) The car's own suspension, once the wheel set is removed
D) Cribbing placed under the coupler
Correct Answer: B
Rationale: A raised load must never be supported by lifting equipment alone.
Approved safety stands, jack stands, or cribbing must be positioned to carry the load
before any work is performed beneath the car. Hydraulic jacks can fail, and a jack
failure under a suspended load is a catastrophic, often fatal, event.
Question 7
Which PPE is required when performing arc welding on a railcar body?
A) Safety glasses and leather gloves only
B) Welding helmet with proper filter shade, flame-resistant clothing, leather gloves,
safety boots, and respiratory protection as needed
C) Hearing protection and a face shield
D) Hi-vis vest and hard hat only
Correct Answer: B
Rationale: Arc welding requires a welding helmet with an appropriate filter shade
(typically shade 10–13 for arc welding), flame-resistant clothing, leather welding
gloves, safety boots, and respiratory protection when welding on painted, galvanized,
or coated surfaces. Welders are also at risk from UV radiation, metal fume fever, and
burns.
Question 8
A technician is preparing to handle refrigerant recovered from a railcar HVAC system.
Which certification is required?
Certification Practice Exam 2026 | Questions
with Correct Answers & Detailed Rationales |
Railcar Brake, Truck, Wheel & Electrical
Systems Study Guide
Note: Specific numeric condemnation limits vary by transit agency rulebook, AAR
standards, OEM manual, and FRA/state oversight requirements. Where a number is
given, it reflects typical industry practice — always verify against the controlling
authority for your property.
SECTION 1: SAFETY, PPE, BLUE FLAG & REGULATORY COMPLIANCE (Q1–12)
Question 1
A technician must perform maintenance under a railcar that is sitting on a powered
track. Which protective measure must be established before the technician goes
under the car?
A) A wheel chock placed on the leading axle only
B) Blue flag / blue signal protection applied by a qualified employee
C) The car's hand brake applied and the technician's partner watching the cab
D) A radio call to the control center stating the technician's location
Correct Answer: B
Rationale: Blue flag (or blue signal) protection is the required method for protecting
workers on, under, or between rail equipment. The blue signal must be applied by a
qualified employee and cannot be removed by anyone other than the person who
applied it (or their designated relief). Wheel chocks, hand brakes, and radio
,notifications are supporting measures but do not substitute for blue signal protection
under FRA/transit roadway worker protection rules.
Question 2
Which OSHA regulation governs lockout/tagout procedures when servicing railcar
equipment with stored energy?
A) 29 CFR 1910.146
B) 29 CFR 1910.147
C) 29 CFR 1910.140
D) 29 CFR 1910.132
Correct Answer: B
Rationale: 29 CFR 1910.147, "The Control of Hazardous Energy (Lockout/Tagout),"
governs the servicing and maintenance of machines and equipment where
unexpected energization or release of stored energy could cause injury. 1910.146
covers confined spaces; 1910.140 covers personal fall protection; 1910.132 covers
PPE.
Question 3
A technician is preparing to work inside a railcar's HVAC plenum that has limited
egress and is not designed for continuous occupancy. This space is best classified
as:
A) A permit-required confined space
B) A non-permit confined space only if ventilation is running
C) An exempt maintenance area
D) A Class I Division 1 location
Correct Answer: A
Rationale: A permit-required confined space meets one or more of: contains a
hazardous atmosphere, contains material that could engulf, has an internal
configuration that could trap or asphyxiate, or contains any other recognized serious
safety or health hazard. Railcar plenums, sumps, and underfloor voids frequently
,qualify. Entry requires atmospheric testing, an entry permit, an attendant, and rescue
provisions under 29 CFR 1910.146.
Question 4
Which federal regulation contains the brake system safety standards applicable to
freight railcars in interchange service?
A) 49 CFR Part 215
B) 49 CFR Part 229
C) 49 CFR Part 232
D) 49 CFR Part 674
Correct Answer: C
Rationale: 49 CFR Part 232 governs brake system safety standards, including brake
tests, piston travel limits, and single car air brake tests. Part 215 covers freight car
safety standards (wheels, axles, bearings, couplers). Part 229 covers locomotive
safety standards. Part 674 is the FTA State Safety Oversight rule for transit.
Question 5
A technician discovers a cracked side frame during a routine inspection. Under 49
CFR Part 215, this defect is best classified as:
A) A non-complying condition requiring repair at the next scheduled shop visit
B) A defect that renders the car unsafe for service and requires it be removed from
service
C) A reportable condition only if the crack exceeds 1 inch
D) A condition to be documented but not acted upon
Correct Answer: B
Rationale: A cracked side frame is a safety defect that renders the car unsafe for
continued service. Under FRA freight car safety standards, such a defect requires the
car to be removed from service and repaired before it can be moved in revenue or
interchange service. Cracked side frames can lead to truck collapse and derailment.
, Question 6
When jacking a railcar to replace a wheel set, what is the minimum required support
method once the car is raised?
A) The hydraulic jack alone, provided it is rated for the load
B) Approved safety stands or blocking capable of supporting the load, positioned so
the load is not supported by the jack alone
C) The car's own suspension, once the wheel set is removed
D) Cribbing placed under the coupler
Correct Answer: B
Rationale: A raised load must never be supported by lifting equipment alone.
Approved safety stands, jack stands, or cribbing must be positioned to carry the load
before any work is performed beneath the car. Hydraulic jacks can fail, and a jack
failure under a suspended load is a catastrophic, often fatal, event.
Question 7
Which PPE is required when performing arc welding on a railcar body?
A) Safety glasses and leather gloves only
B) Welding helmet with proper filter shade, flame-resistant clothing, leather gloves,
safety boots, and respiratory protection as needed
C) Hearing protection and a face shield
D) Hi-vis vest and hard hat only
Correct Answer: B
Rationale: Arc welding requires a welding helmet with an appropriate filter shade
(typically shade 10–13 for arc welding), flame-resistant clothing, leather welding
gloves, safety boots, and respiratory protection when welding on painted, galvanized,
or coated surfaces. Welders are also at risk from UV radiation, metal fume fever, and
burns.
Question 8
A technician is preparing to handle refrigerant recovered from a railcar HVAC system.
Which certification is required?
