The Coaster Bus Mobile Clinic is the most extensive conversion TGS has created. Utilising the large internal area of the Coaster has allowed TGS to develop a multipurpose space that provides a patient waiting area and a patient clinic area with individual cubicles for added privacy. This area also features a patient toilet and sink. The rear compartment features storage for medical equipment and an area to conduct testing. On the exterior of the Coaster, TGS has installed a large awning to protect patients from the heat of the sun.