This chapter explores various specialized cleaning vehicles designed for unique and demanding environments. It examines three main types: the road suction dredger, permeable pavement rehabilitation truck, and metro tunnel vacuum dust-removal carriage. For each vehicle, the chapter discusses their operational overview, key components, design fundamentals, and major systems and parts. Attention is given to technical specifications, performance tests, and guidelines for selecting the appropriate equipment for specific cleaning challenges. By presenting comprehensive details and comparisons, the chapter provides practical reference for the design, selection, and application of these special cleaning vehicles in diverse urban and infrastructural maintenance scenarios.