100+ Free ASE H3 Drive Train (Transit Bus) Practice Questions
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A transit bus has a vibration that is present only under power and disappears when coasting at the same road speed. After confirming good U-joints and balance, the technician should next investigate:
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Key Facts: ASE H3 Drive Train (Transit Bus) Exam
50 / 40
Total / Scored Questions
ASE Transit Bus test series
60 min
Time Limit
ASE Transit Bus test series
~$59
ASE Registration Fee
ASE registration
70 / 10 / 20
Content Area Weighting
ASE H3 content outline
Criterion-referenced
Scoring Method
ASE scoring policy
2 years
Work Experience Requirement
ASE certification requirements
ASE H3 is the Transit Bus Drive Train certification test. It contains 50 total questions with 40 scored multiple-choice items and a 60-minute time limit, delivered by appointment at Prometric. Scoring is criterion-referenced and set by ASE. Content is weighted roughly 70% Automatic Transmission Diagnosis & Repair, 10% Drive Shaft & Universal Joint Diagnosis & Repair, and 20% Drive Axle Diagnosis & Repair, and certification requires documenting two years of relevant work experience.
Sample ASE H3 Drive Train (Transit Bus) Practice Questions
Try these sample questions to test your ASE H3 Drive Train (Transit Bus) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1On a transit bus equipped with an Allison B-series automatic transmission, what is the primary function of the torque converter?
2Technician A says the torque converter lockup clutch eliminates converter slip to improve fuel economy at cruising speed. Technician B says the lockup clutch should engage at or near stall for maximum torque multiplication. Who is correct?
3A transit bus automatic transmission uses planetary gearsets. Which component arrangement allows a single gearset to provide reduction, direct drive, or reverse depending on which member is held or driven?
4On an Allison electronically controlled transit transmission, which device commands shift solenoids and clutch apply based on inputs such as throttle position, output speed, and range selection?
5A transit bus shows a transmission fluid that is dark brown and smells burnt. What does this most likely indicate?
6What is the correct procedure for checking the fluid level on most Allison transit bus transmissions equipped with a dipstick?
7Technician A says many heavy-duty transit transmissions specify a TES-certified synthetic transmission fluid for extended drain intervals. Technician B says any universal automatic transmission fluid is acceptable as long as the level is correct. Who is correct?
8A transit bus transmission goes into a fault mode and limits operation to a single forward range after logging a code. This protective behavior is best described as:
9During a stall test on a transit bus automatic transmission, engine RPM is far below the specified stall speed. This most likely indicates:
10What is the purpose of an integral hydraulic retarder in a transit bus automatic transmission?
About the ASE H3 Drive Train (Transit Bus) Exam
ASE H3 — Drive Train (Transit Bus) is the ASE Transit Bus series certification covering the bus drive train: heavy-duty automatic transmissions, driveshafts and universal joints, and drive axles. It is built for transit-bus technicians who diagnose and repair Allison-style automatic transmissions, integral retarders, electronic shift controls, driveline angles, and single- and double-reduction axles.
Assessment
40 scored multiple-choice (50 total incl. 10 unscored) (official ASE); this practice bank is 100 selected-response items
Time Limit
60 minutes
Passing Score
Criterion-referenced (set by ASE)
Exam Fee
~$59 (ASE registration) (ASE (National Institute for Automotive Service Excellence))
ASE H3 Drive Train (Transit Bus) Exam Content Outline
Automatic Transmission Diagnosis & Repair
Torque converter and lockup clutch, planetary gearsets, clutch-to-clutch shift logic, electronic controls and the TCM, integral hydraulic retarder, fluid type/level/temperature, hydraulic pressure testing, diagnostic codes, adaptive learning, and prognostics.
Drive Shaft & Universal Joint Diagnosis & Repair
Driveshaft and slip joint inspection, universal joints, center support bearing, working angles, phasing, balance, lubrication, and vibration diagnosis on transit-bus drivelines.
Drive Axle Diagnosis & Repair
Single-reduction and double-reduction drive axles, differential operation, ring-and-pinion setup and contact pattern, pinion depth and backlash, axle and wheel-end bearings, seals, breathers, and lubrication.
How to Pass the ASE H3 Drive Train (Transit Bus) Exam
What You Need to Know
- Passing score: Criterion-referenced (set by ASE)
- Assessment: 40 scored multiple-choice (50 total incl. 10 unscored) (official ASE); this practice bank is 100 selected-response items
- Time limit: 60 minutes
- Exam fee: ~$59 (ASE registration)
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
ASE H3 Drive Train (Transit Bus) Study Tips from Top Performers
Frequently Asked Questions
How many questions are on the ASE H3 test?
The ASE H3 Drive Train (Transit Bus) test has 50 total questions, of which 40 are scored multiple-choice items. The remaining 10 are unscored research questions that ASE uses to develop future tests, so you cannot tell which questions count.
How much time do I get and what does ASE H3 cost?
ASE H3 has a 60-minute time limit. The ASE registration fee for a standard test like H3 is approximately $59; confirm the current amount in your ASE account before paying since fees can change.
What passing score do I need on ASE H3?
ASE tests are criterion-referenced, meaning the passing standard is set by ASE based on the knowledge required to do the work, not a fixed percentage you can look up. ASE notifies you of pass or fail rather than publishing a universal cut percentage for H3.
What content is weighted most heavily on ASE H3?
Automatic Transmission Diagnosis & Repair is by far the largest area at roughly 70% of the test, followed by Drive Axle Diagnosis & Repair at about 20% and Drive Shaft & Universal Joint Diagnosis & Repair at about 10%. Spend the majority of your study time on heavy-duty automatic transmission and electronic control topics.
Do I need work experience to be ASE certified for H3?
Yes. Passing the H3 test is required, but ASE certification also requires documenting two years of relevant hands-on work experience. Up to one year can be substituted with relevant formal training under ASE's experience requirements.
Where is the ASE H3 test given?
ASE tests, including H3, are delivered by appointment at Prometric test centers. You register through ASE and then schedule a seat at an available Prometric location.