Anti-Lock Braking Systems - PowerPoint PPT Presentation

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Anti-Lock Braking Systems

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Anti-Lock Braking Systems Branden L. Jones, CSP, OHST Manager - EH&S Texas New Mexico Power Fort Worth, Texas Pop Quiz Does Anti-Lock Brake System (ABS) usage follow ... – PowerPoint PPT presentation

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Title: Anti-Lock Braking Systems


1
Anti-Lock Braking Systems
  • Branden L. Jones, CSP, OHST
  • Manager - EHS
  • Texas New Mexico Power
  • Fort Worth, Texas

2
Pop Quiz
  • Does Anti-Lock Brake System (ABS) usage follow
    conventional driver training?
  • Is ABS usage on cars and trucks the same?
  • Do you address ABS in Defensive Driving Courses?

3
Quiz Answers
  • NO
  • NO
  • ??
  • Does Anti-Lock Brake System (ABS) usage follow
    conventional driver training?
  • Is ABS usage on cars and trucks the same?
  • Do you address ABS in Defensive Driving Courses?

4
Mini Train-the-Trainer
  • Basic Functions of ABS Systems
  • Driver Instructions for Cars and Light Trucks
  • Driver Instructions for Heavy Trucks
  • Resources for Defensive Driving Program
    Integration

5
Basic Functions of ABS
  • Physics 101 Static Friction is Greater than
    Moving Friction
  • ABS IS Computer Controlled Brake Pedal Pumping
  • ABS Allows the Driver To Maintain Control During
    Hard Braking

6
Vehicle ABS System
  • Speed Sensors on Wheels are Monitored by On Board
    Computer
  • Radical Speed Differences Trigger ABS Action
  • ABS Pumps the Brakes 18 Times per Second

7
Vehicle ABS System
  • ABS Systems Counter-Intuitive Operations
  • Grinding Sounds from All Wheels
  • Pulsating or Soft Brake Pedal
  • Driver Can Still Steer (with Reduced Effect)

8
Video Clip
  • America Brakes for Safety
  • ABS Education Alliance

9
Driver Education (Cars)
  • STOMP on the Brake Pedal
  • STAY on the Brake Pedal with Steady Pressure
  • STEER to Avoid Collision
  • Pumping the Brake Pedal STOPS ABS Systems from
    Operating Properly (ON-OFF-ON-OFF-ON-OFF)

10
Video Clip
  • America Brakes for Safety
  • ABS Education Alliance

11
Driver Education (Trucks)
  • Single Vehicle Configuration
  • All Wheels
  • STOMP, STAY, STEER
  • Tractor - Trailer Configuration
  • Any Combination
  • Brake Steadily and Evenly
  • Back-off Brakes to Maintain Control

12
Video Clip
  • ABS Driver Training
  • US DOT

13
ABS Maintenance Issues
  • Most Common Issues
  • Loose Wiring
  • Wheel Speed Sensor Pickup and Calibration
  • Other Possibilities
  • Modulator Valve Failure
  • Electronic Control Unit Failure

14
Video Clip
  • ABS Maintenance
  • US DOT

15
Driver Training Integration
  • ABS Systems Differ from Traditional Braking
    Training
  • Items to Incorporate
  • Basic Function of ABS Systems
  • How to Drive and Brake with ABS
  • What Happens when ABS Engages
  • Emphasize Steering!

16
Educational Resources
  • Educational Resources
  • Super Cheap!!!
  • ABS Education Alliance
  • Videos, Trainer Packages, Brochures, etc.
  • http//www.abs-education.org/index.html
  • Federal Motor Carrier Safety Administration
  • Videos, Cirriculum
  • http//www.fmcsa.dot.gov/safetyprogs/brakesaft.htm

17
Questions?
  • Thanks!
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