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# Roll Over Power Point Advanced Edu Safety Gew 6 10 09

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An Education on rollovers and rear end crash

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### Roll Over Power Point Advanced Edu Safety Gew 6 10 09

1. 1. Advanced Education in Rollover and Rear end Crashes Safety Accident Prevention Tank Truck Rollover and Rear End Crashes
2. 2. Accident Prevention Rollover & Rear End Crashes Advanced Education In Safety DRIVER AND PUBLIC SAFETY COMES FIRST
3. 3. Rollover Prevention  Our unified cause for keeping the roadways and highways safe is the application of educating those that transport our many commodities through and across the united states. With out this unified effort to educate quality driving habits to prevent accidents and rollovers our ability to have Safety First is diminished and lives are at risk.
4. 4. Potential Causes of Rollovers  Excessive Speed  Liquid Movement  Erratic maneuver  Lack of education in good, Safe and defensive driving habits.  Being in a hurry  Maintenance issues  Weather and road conditions
5. 5. Here are some facts to ponder Vehicle Stability Depends on these factors  Center of Gravity  Distance Between Wheels  Liquid Movement  Speed change / Serge / Momentum
6. 6. Centrifugal Force or CF  Is the force working sideways on a moving vehicle  Increases by the square of the speed  double the speed = 2 squared (4) X the CF  3 X the Speed = 3 squared (9) X the CF
7. 7. Four Major Factors Contribute to a Rollover  High Center of Gravity  Radius of Curve  Slope of the Roadway  Speed of the vehicle
8. 8. High Center of Gravity The higher the Center of Gravity of a vehicle and its load, the easier it is for the force of gravity to move outside the foot print of the vehicle that is traveling at the speed that will be the causal factor for the rollover to take place.
9. 9. Seeing and recalling situations in the passed that I was involved in as an investigator always came up with stifling proof that these factors along with others were the underlying factors that contributed to the situation. 1. Speed 2. Being hurried for a signal light while turning or Lane change at intersection or Highway. 3. Liquid load serge 4. Other outside factors (A motorist) 5. Alcohol / Drugs
10. 10. Potential of life that can be lost, property damage can cost thousands, Insurance costs go up, customers and potential customers can be lost.
11. 11. Radius of Curve The shorter or “tighter” the radius of curve, the greater the side force to “pull” the trailer over! “ROLLOVER”
12. 12. Slope of the Roadway The greater the slope or “crown” of the roadway the easier it is for the force of gravity to be outside the foot print of the vehicle “ROLLOVER”
13. 13. Speed  Most influential factor  Centrifugal Force increase in an amount equal to the square of the vehicle’s speed  Results in decreased driver response time
14. 14. Driver Control  High Center of Gravity None  Radius of Curve Route selection  Slope of Roadway Route selection  Speed Significant
15. 15. Driver’s Guidelines: Turns & Curves Posted Curves On sharp, curved roadways the safe speed for tractor-trailers is 10 MPH below the posted warning entry or exit speed limits.
16. 16. Driver’s Guidelines: Turns & Curves Unmarked Curves On sharp, curved roadways which are not-posted, the safe speed for tractor-trailers is 10 MPH !
17. 17. Speed Cushion As the SPACE cushion is the separation in distance between vehicles, the SPEED cushion is the separation in MPH between ROLLOVER speed and a safe maneuvering speed within a curve.
18. 18. Unsafe Maneuvering Sudden evasive maneuvers have a high potential for rollover. Hard braking and sudden turning to avoid an obstacle or small car has resulted in numerous rollovers.
19. 19. Unsafe Maneuvering Side to side lane changes cause the liquid movement to ”come into phase” with the vehicle movement. This results in a lower rollover speed.
20. 20. Defensive Driving Principles  Aim High in Your Steering  Get the Big Picture  Keep Your Eyes Moving  Leave Yourself an Out  Make Sure They See You
21. 21. Defensive Driving Principles What causes rear end collisions?
22. 22. Leave Yourself an Out  Awareness  Vehicle Position
23. 23. SPEED CUSHION IS THIIS THE ANSWER ? (Hand Outs)
24. 24. Being in a Hurry!  Signal Lights  Off Ramps  On Ramps  Lane Changes  Narrow Road Travel
25. 25. What is our answer to this education we have just seen?  Slow down  Be a smart cautious driver  Be educated on the latest techniques of defensive driving (Smith System)  Ask for help and broadcast it if others need help.