1
CDL General Knowledge
FMCSA + state DMVs · 50 questions · pass 80%
11 topic drills available · state-specific
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Skilled Trades & Transportation licensing exams
Skilled-trade and transportation licensing exams cover commercial driving (CDL by the FMCSA and state DMVs), HVAC refrigerant handling (EPA Section 608, NATE), electrical journeyman/master licensure, plumbing, welding (AWS) and OSHA construction-safety credentialing. Each is administered by a federal agency or trade body with a state-issued license layered on top.
10 certifications tracked
Median pay: $54,320 (heavy-truck drivers), $61,990 (electricians), $59,610 (HVAC techs) per BLS 2024.
Authorities: FMCSA, EPA, NATE, AWS, OSHA, state DMVs and licensing boards
All Skilled Trades & Transportation exams
Choose an exam to see the full topic list, blueprint and practice variants.
2
CDL Air Brakes Endorsement
FMCSA + state DMVs · 25 questions · pass 80%
5 topic drills available · state-specific
3
CDL Combination Vehicles
FMCSA + state DMVs · 20 questions · pass 80%
5 topic drills available · state-specific
4
CDL Hazardous Materials Endorsement (H)
FMCSA + TSA + state DMVs · 30 questions + TSA security check · pass 80%
7 topic drills available · state-specific
5
CDL Passenger Endorsement (P)
FMCSA + state DMVs · 20 questions · pass 80%
6 topic drills available · state-specific
6
CDL School Bus Endorsement (S)
FMCSA + state DMVs · 20 questions · pass 80%
7 topic drills available · state-specific
7
CDL Tank Vehicle Endorsement (N)
FMCSA + state DMVs · 20 questions · pass 80%
5 topic drills available · state-specific
8
EPA Section 608 Refrigerant Certification
EPA · 25 core + 25 per type · pass 70% per type
5 topic drills available · national
9
OSHA 30-Hour Construction Outreach
U.S. Department of Labor / OSHA · 30 hours instruction + topical quizzes · pass 70% per module
9 topic drills available · national
10
Journeyman Electrician Licensing Exam
State Boards of Electrical Examiners · 80-100 open-book NEC · pass 70-75%
9 topic drills available · national
Why this field? Median pay: $54,320 (heavy-truck drivers), $61,990 (electricians), $59,610 (HVAC techs) per BLS 2024. ExamEdge Prep tracks the published exam outlines from FMCSA, EPA, NATE, AWS, OSHA, state DMVs and licensing boards and updates these drills whenever the blueprint changes.