Guided bus: an advanced bus technology for the Research Triangle

A feasibility study to determine the most suitable of three transit alternatives to link the city of Raleigh,
North Carolina, with the Research Triangle Park. The three systems were:

 Guided bus

 Light rail and

 Express bus.

Evaluation criteria were the technical feasibility, costs, security and the flexibility of the system.

Since guided bus and light rail would have to share an existing right of way with heavy rail, the study included
a thorough analysis of the technical feasibility of a joint operation. This required an extensive review of existing
and planned guided bus systems.

The cost analysis involved an in-depth review of operating costs of transit systems in cities of comparable size.
Based on the findings of this review numbers for the Research Triangle area were assessed. In a similar way the
investment both into rolling stock and into infrastructure were determined. Annualized costs were computed for
cost comparison.

The assessment of the benefit-cost ratio of each of the alternatives took into account the flexibility of the system,
i.e. the degree of ease with which routings could be changed and new services be added.

The study has been conducted in close cooperation with the state of North Carolina's department of Transportation.