Ridership projections are likely to underpin the feasibility of the personal rapid transit system. Except for those few applications where personal rapid transit is the only form of transportation (a must-ride system), people may or may not choose to use it for a wide variety of reasons.
The success (revenue) of a personal rapid transit system will almost always be closely tied to ridership. Accurately estimating the future ridership of the personal rapid transit system is, thus, usually a key activity. Accomplishing this successfully will take the skills of expert traffic engineers coupled with knowledgeable PRT consultants.