Technology Assessment (OTA) report in May 1975, AGT Terminology standardized terminology for the different classes of automated guidev/ay transit (AGT) have been accepted. AND RSD Programs AGT, a family of transportation systems and con- cepts that use automatically controlled, driverless vehicles on guideways separated from the conventional ' traffic flow, is divided into three major categories: shuttle-loop transit (SLT) , group rapid transit (CRT) , and personal rapid transit (PRT) . Follov/ing is a brief description of each category. SLT is the simplest form of AGT where the vehicles * or vehicle trains move along fixed routes with little or no switching. In a shuttle system, vehicles move back and forth along a short single lane guideway with possibly a bypass section to permit bi-directional vehicle flow. A loop system features a closed single lane path. SLT stations are normally on-line permitting either all-stop or demand-stop service. The vehicle capacity can vary greatly from less than 20 to over 100 passengers with accommodations for a large per- centage of standees
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