Outcomes
        In this lesson you will learn 
        - identify and describe modes of transportation 
 
          - identify and describe transportation systems operating within each mode 
 
          - identify and describe inter-modal transportation systems 
 
          - identify and describe transportation subsystems 
 
          - investigate selected transportation subsystems
 
        
Prerequisites
        To be successful in this lesson, it would be helpful to know the following: 
        
        - Electricity and electronics concepts (section 1 of this unit) 
 
          - Basic forms of communications technologies (section 2 of this unit)