4.0 Development Phases:
The Hybrid PRT System will develop through 3 potential generations or phases of design.

4.1Phase I:

Using electric propulsion during transit with availability of an emergency gas, diesel or compressed natural gas (CNG) backup, and some operator input. A series of on-board and Grid internal computers would automatically determine the nature of traffic, a dangerous condition or collision potential, and adjust the speed of an HPR vehicle to a safe velocity or bring it to a stop.