1. Land Transportation 3 Technology Education

2. Control »Steering »Front Wheel Steering »Rear Wheel Steering »Forklifts, Street Cleaning Machines »All Wheel Steering »Popular in large vehicles »Operates front and rear wheels at the same time

3. Coordinated Steering »Negative Steering, in which the front and rear tires are steered in opposite directions. »Aids in parking and decreases the turning radius.

4. Crab Steering »Positive Steering, all tires are turned in the same direction »Used in changing lanes and adds stability

5. Steering »Rack and Pinion - Type of steering that changes rotary motion into linear motion. »Steering wheel is attached to the pinion gear, the pinion gear then moves the rack right or left which in turn moves the wheels right or left.

7. Articulated Steering »Used on large hinged vehicles. »Steering controlled by swiveling the trailing wheels along with the front wheels.

8. Tracked Vehicles »Tracked vehicles steer by varying the speed on one of the tracks. »Tanks, bulldozers and logging equipment use tracks. »Tracked vehicles can turn around in one spot by moving one track forward and one track backwards.

9. Suspension Systems »In-land vehicles suspension systems can include tires, wheels, shocks, springs. »Tires – Two important functions »Provide cushion as the vehicle travels over bumps »Provide traction. The contact patch is the part of the tire actually touching the road surface.

10. Springs »Coil Spring – Spring made by taking steel rods and forming them around a cylinder. »Coil springs are placed between the vehicle frame and axle. When the vehicle hits a bump the spring uses potential energy to expand and push the wheel back to the road.

12. Springs »Leaf Spring – A series of steel strips, each one shorter than the next. »Leaf springs are attached to the axle and two points on the vehicle frame. When the vehicle hits a bump the spring flexes up and down.

14. Shock Absorbers »Shock absorbers control the roads unevenness, so it is not transferred to the vehicle structure. »They also help minimize spring oscillation (The compression and rebounding of a spring)

16. Stabilizer Bars (Sway Bar) »Long steel rod mounted between wheel assemblies. »This keeps the vehicle from leaning to far when going around turns.