Note: Under some circumstances, particularly as it relates to locale, it may be appropriate to teach all, or components of this lesson, earlier in the course.

Purpose

To convey to the student an understanding of the physics involved and the procedures required to smoothly negotiate corners and curves on surfaces with different levels of friction.

Duration: 60 minutes

Learning Objectives

Performance Objectives

Actively participate in discussions and group work (PSVS).

Knowledge Objectives

• Understand the forces involved in negotiating corners and curves.
• Understand the effect of friction on negotiating corners and curves.
• Know the technique for negotiating a corner.
• Know the technique for negotiating a curve.

Teaching Points

1. "Smooth is beautiful!"
2. With perfect cornering, you should not feel any lateral acceleration.

Content

1. Different types of corners and curves:
   • fixed radius curves
   • diminishing radius curves
   • differing degrees of banking
   • differing lane widths
2. The physics of changing direction. The vehicle will normally want to continue in the direction that it has been travelling. If you wish to change that direction by going around a corner or curve, then you can only do so if there is sufficient traction between the tire and the road to permit the directional change. As the friction decreases, so must the speed of the vehicle decrease, if the vehicle is to make the curve.
3. Use the proper technique for negotiating a curve - see Driver's Handbook.
4. Use the proper technique for negotiating a corner - see Driver's Handbook.

Assignments

1. Find a fixed radius curve in your location.
2. Find a diminishing radius curve in your location.
3. Look at curves and corners to determine the extent of banking.
4. Note the above three points and bring the information to the next class.

Instructional Approaches

• Practise field observation.
• Demonstrate, using diagrams, slides, videos or overhead transparencies.
• Solicit student responses and fill in the gaps.
• Use simulation.
• Assign questions.

Support Requirements

Materials

• Appropriate diagrams, slides, videos or overhead transparencies.

Equipment

• Flip-charts, slide projector, VCR, overhead projector.