ASE School Bus Brakes (S4) Examination — Information & Free Practice
US · Examination information
100 free questions · Answer explanations · No signup required
ASE School Bus Brakes (S4) Examination
- Provider
- Prometric test centers
- Format
- English computer-based, single-correct-answer multiple-choice initial certification examination at a test center.
- Exam questions
- Total questions: 60; Scored questions: 50; Unscored questions: 10; The total includes the scored and unscored questions.
- Time limit
- 75 minutes
Examination outline
Air Brakes Diagnosis and Repair (68%)
- Air Supply and Service Systems
- Mechanical/Foundation
- Parking Brakes
Hydraulic Brakes Diagnosis and Repair (20%)
- Hydraulic System
- Mechanical System
- Power Assist Units and Miscellaneous
- Antilock Brake System (ABS), Automatic Traction Control (ATC), Electronic Stability Control (ESC), and Collision Warning/Avoidance System Diagnosis and Repair (12%)
Examination sources
- ASE School Bus Certification Tests
Study Guides, School Bus Study Guide link
- The Official ASE Study Guide: ASE School Bus Tests
p. 4, Introduction, scope and task-list adoption paragraphs
- The Official ASE Study Guide: ASE School Bus Tests
p. 20, Brakes (Test S4), complete Content Area table including nested counts, column headings and total
- The Official ASE Study Guide: ASE School Bus Tests
pp. 20–21, A. Air Brakes Diagnosis and Repair, full task lists under A.1–A.3
- The Official ASE Study Guide: ASE School Bus Tests
pp. 21–22, B. Hydraulic Brakes Diagnosis and Repair, full task lists under B.1–B.3
- The Official ASE Study Guide: ASE School Bus Tests
pp. 22–23, C heading and complete tasks 1–12, including continuation on p. 23
- The Official ASE Study Guide: ASE School Bus Tests
p. 3, School Bus Types Found on ASE Certification Tests, all Type A–D definitions
- The Official ASE Study Guide: ASE School Bus Tests
p. 4, Introduction, multiple-choice formats and instructions
- The Official ASE Study Guide: ASE School Bus Tests
p. 4, How Long are the Tests?, S4 Brakes row, Certification Tests number and time columns
- The Official ASE Study Guide: ASE School Bus Tests
p. 4, certification question-count asterisk footnote
- ASE Certification: Need to Know
p. 3, How Do I Become Certified?, step 3
- The Official ASE Study Guide: ASE School Bus Tests
p. 4, How Long are the Tests?, S4 Brakes row, Certification Tests testing-time column
- ASE Certification: Need to Know
p. 4, Test Centers
- ASE Certification: Need to Know
p. 4, What Are My Certification Options?, initial certification paragraph
- ASE Test Center Policies
90 Days to Take Your Test
- ASE School Bus Certification Tests
Testing FAQs, How does registration and scheduling work?
- ASE Work Experience Requirements
ASE Work Experience Requirements, testing before satisfying experience
- ASE Test Center Policies
Photo ID with Signature Policy, introductory requirement
- ASE Test Center Policies
Photo ID with Signature Policy, account-name rule
Related license preparation
This examination may be required or accepted as an alternative, depending on the license and application pathway.