Samenvatting
The criteria developed for the selection of DRT vehicles, the minibuses and that were bought, the innovative design features and the mechanical problems that were encountered are described. A preventive maintenance program has been developed: lubricating, oil change, and normal fluid collection and engine check are done every 3000 miles, and major inspection is performed every 6000 miles. Specifications have now been developed which provide for substantially larger, heavy duty brake systems and fuel systems for propane gas or other nonfossil fuels.