The document discusses the dimensions of cars and lanes, indicating that cars are typically 5 to 6 feet wide and lanes are 9 to 12 feet wide. It highlights the concept of line-of-vision blind zones, which create optical illusions affecting drivers' perception of their vehicle's size and position. The document concludes with a homework assignment encouraging readers to explore the blind zones around their cars.

1. How wide is a car?
5 – 6 feet wide
How wide is a lane?
9 – 12 feet wide
Generally a lane is twice
as wide as a car!

2. The body of the car blocks
your view of the
surrounding roadway.
You can’t see the actual
position of the car on the
roadway.
Line-of-Vision
Blind Zone

3. Blind areas create an
optical illusion that makes
the vehicle seem larger
than it really is.
Reference Points help you
to overcome this problem.
Line of Vision
Blind Area

4. Two + car lengths to the rear
One car length to the front
Line-of-Vision Blind Zones

5. Line-of-Vision Blind Zones
Two car widths right sideOne car width left side

6. One car length to the front
Two car lengths to the rear
One car width to the left
Two car widths to the right
Homework Assignment!!!
Discover the size of the blind zone
around your car.
Line-of-Vision Blind Zones