SAFE Winter Driving Tips & TechniquesMTU KRC Winter Driving School Braking Techniques • Threshold...
Transcript of SAFE Winter Driving Tips & TechniquesMTU KRC Winter Driving School Braking Techniques • Threshold...
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
SAFE Winter Driving
Tips &Techniques
Mark OsborneMTU KRC Winter Driving School
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving SchoolToday We Will Cover The Following:
• What is KRC• KRC Winter Driving School• Basic Items• Grip - Friction• Braking Techniques• Weight Transfer and Control
Techniques
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving SchoolKRC – Research, Development & Testing
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving SchoolKRC – Winter Test Facility
• Lot’s of SNOW – 200 inches Annually• Long Winter’s – December to April• Operate Winter Test Facility
• Automakers • Heavy Truck Components• Tier 1’s – Tires, AWD Systems, Etc.
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
KRC Winter Driving School• Started About 12 Years Ago• Winter Test Facility – Saturdays Slower• Bridgestone Winter Driving School• GM Human Factors Research Project• OHSP Grant – Developed Driving Manuals• AAA Donation - Video
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
KRC Winter Driving School• Taught Every Saturday January to No Snow• Runs 8 am to About 4 pm• Costs Only $150• Lots of Seat Time Mixed With Classroom• Small Classes – Personalized Attention• Builds Confidence and It’s FUN!
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
The Basics - The Best Sitting Position• Not Too Close – Or Too Far Back
- Difficult To Control The Pedals And The Wheel For Large Steering Inputs Also Concern For Airbags/Injuries
• With Arms Outstretched – Wrists Should Hit Top Of Steering Wheel Adjust For Pedal Control Too!
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
The Basics - Steering Wheel Hand Position
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
The Basics• Wear Seat Belts
Make passengers wear themThey do save lives
• Buy/Use Other Safety DevicesChild car seatsABS brakes (but understand them)Airbags
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
The Basics• Create Space
4 Seconds + - more for bad conditionsIn heavy traffic – create space – Slow Down!
• Avoid Distractions While DrivingCell phoneEatingAdjusting the radio
• Use Your Headlights All The Time!
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
The Basics - Tires!• Most Important Factor• If You Live In Snow Country We
Recommend Using Winter Radials On All Four Wheels!
• Or Good (Not Worn) All Season Radials On All Four Wheels
• Don’t Over Or Under-Inflate Tires
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
All Season Radial Winter Radial
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Grip
• Adhesive Quality Between theTire and the Road
• Very Important To UnderstandFor Traction, Handling AndBraking!
• You Can Not Steer Without Grip!
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Where’s The Grip?
At The Contact Patch! 4 of ‘em!
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Friction Circle ConceptsAcceleration Capacity
0.7, 0.8, . . . , 1.05???
LH Turn Capacity
Braking Capacity
RH Turn Capacity
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Friction Circle ConceptsAcceleration Capacity
0.7, 0.8, . . . , 1.05???
LH Turn Capacity
Braking Capacity
RH Turn Capacity
Evasive Driving
Normal Driving
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Friction Circle ConceptsAcceleration Capacity
0.7, 0.8, . . . , 1.05???
LH Turn Capacity
Braking Capacity
RH Turn Capacity
Packed Snow – 0.3
Ice – 0.1
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Friction Circle ConceptsAcceleration Capacity
0.7, 0.8, . . . , 1.05???
LH Turn Capacity
Braking Capacity
RH Turn Capacity
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Braking Techniques• Cadence Braking Is Pumping
The Brakes – No Prolonged Lockup!
• Crisp Lock, Then Release (Let Roll),Then Lock, Then Release, Etc.
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Braking Techniques• Threshold Braking is Holding The Brakes
At The Point Where Brakes Start To Lock
• May Have To Lock Brakes For Short Period And Back Off Slightly To FindThreshold
• Difficult To Do On Slippery Roads
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Braking Techniques• Anti-lock Brakes (ABS) Pump The
Brakes For You, Very Fast • Does Not Lock The Wheels• Doesn’t Always Stop You Faster!• Allows SOME Steering Control
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Panic Avoidance
• You Can’t Brake & Steer On Slippery Surfaces
• Brake Then Steer
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Weight Transfer
• Helps To Provide Control• Transfer Weight To Tires That Need
Grip
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Weight Transfer
Acceleration
Braking
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Oversteer
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Oversteer Causes & Solutions• Loss Of Grip On The Rear Wheels• Low Speeds & Take – Off
Steer In The Direction Of The SlideLet Off Gas
• High SpeedsSteer In The Direction Of The SlideStay On The Gas – Steady!
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Understeer
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Understeer Causes & Solutions• Loss Of Grip To Steering Wheels
Either Spinning Or Not Rolling• Don’t Accelerate During A Turn!• Use Lift Throttle To Transfer Weight
To Front Wheels• Use Lift Throttle & A Brake Tap To
Transfer More Weight To Front Wheels
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Be Smooth!• Most People:
- Brake Too Hard, Too Often- Accelerate Too Hard- Use Too Much Steering Input
• It’s Best To Be Smooth!• Remember To Look Where You Want
To Go And You Will Go There!
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
Practice!• We Can Teach You The Methods• You Have To Practice To Be Smooth• Practice Builds Confidence!
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MTU KRC Winter Driving SchoolMTU KRC Winter Driving School
To Learn More About Winter DrivingAttend
The KRC Winter Driving School
(906) 487-2750