I. Case Background: Sewage Treatment Vehicle Procurement by a Municipal Sanitation Department in Linfen City — In 2025, a municipal sanitation department in Linfen City, Shanxi Province (hereinafter referred to as 'Linfen Municipal') publicly tendered for a batch of new Dongfeng-brand sewage treatment vehicles to meet local sewage treatment demands. The project budget was within approximately RMB 3.408 million, with plans to procure six specialized vehicles featuring high-efficiency sewage separation, excellent mobility, and user-friendly operation. Following evaluation, the Dongfeng-chassis sewage treatment vehicle solution offered by Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli') won the bid, with a total delivery of six units at an approximate unit price of RMB 480,000 (based on publicly available tender information). These vehicles are primarily deployed for sewage suction, transportation, and preliminary treatment in aging residential communities, farmers’ markets, and peri-urban areas across Linfen City. This article provides an in-depth review—through the lens of actual drivers—of operational experience, ease of control, C-class driver’s license compatibility, and key daily operation considerations, offering authentic reference material for procurement entities in other regions. Key Highlights: Linfen Municipal selected Chengli’s CLW5180-series Dongfeng sewage treatment vehicles, equipped with Yuchai engines and compliant with China VI emission standards. This model is fully certified for national registration, and Chengli provides nationwide original-chassis warranty coverage plus lifetime after-sales service for the superstructure—ensuring worry-free long-term operation and maintenance. II. Real Driver Experience: What Do Veteran Drivers Say After Three Months? We interviewed Mr. Wang, a veteran driver employed by Linfen Municipal, who has operated these Dongfeng sewage treatment vehicles for over three months. He remarked: 'This vehicle is far more comfortable than my previous older model. First, the cab is spacious, the seat features shock absorption, and after driving eight hours a day, my back doesn’t ache. The air conditioning performs exceptionally well—making summer operations much more bearable.' He particularly praised the intelligent control system: 'In the past, I had to constantly move between controls and levers; now most functions—including pump activation, vacuum operation, tank lifting, and rear cover locking—are managed via the in-cab touchscreen interface—saving considerable time and effort.' Mr. Wang also shared real-world operational insights: 'In narrow alleys behind farmers’ markets—where roads are tight and traffic dense—this vehicle’s small turning radius and wide rearview mirror field of vision make reversing and parking effortless. During sewage suction, the vacuum pump generates significantly less noise than older models, minimizing disturbance to residents during nighttime operations.' However, he noted that when fully loaded with sewage, the vehicle’s increased weight results in slightly longer braking distances, requiring earlier anticipation and adjustment. III. Operational Convenience: Rapid Proficiency Even for Novice Drivers — Linfen Municipal’s newly procured Dongfeng sewage treatment vehicles feature driver-centric control design, reflected in the following aspects: Intelligent Integrated Operation: A central in-cab control panel integrates core functions—including sewage pump, vacuum pump, tank lifting, and rear cover locking—displayed via intuitive graphical interfaces with clear operational logic. Optimized Hydraulic System: Multi-way valve hydraulic control ensures smooth, stable actuation during tank lifting and dumping, reducing risks of misoperation. Safety-Assist Features: Standard equipment includes a rear-view camera, dashcam, and ABS anti-lock braking system—enhancing safety in confined spaces or during nighttime operations. Chassis Adapt