Weinan National VI Dongfeng 3308 mm Wheelbase Sewage Treatment Vehicle Government Procurement Case: In-Depth Analysis from the Driver’s Perspective In municipal sanitation operations, sewage treatment vehicles are critical equipment for ensuring smooth urban drainage systems. In 2024, a municipal sanitation department in Weinan procured a batch of National VI Dongfeng 3308 mm wheelbase sewage treatment vehicles manufactured by Chengli Special Purpose Vehicle Co., Ltd., in response to local requirements for drainage network maintenance. These vehicles have now entered daily service—how do actual drivers evaluate them? Can drivers holding a Class C license operate them easily? This article provides a detailed breakdown from the driver’s perspective, based on a real tender case. I. Procurement Background and Tender Overview In recent years, Weinan City has continuously upgraded its urban drainage system, urgently addressing sediment accumulation issues in aging pipelines. The municipal sanitation department conducted an open tender for sewage treatment vehicles. After multiple rounds of evaluation, Chengli Special Purpose Vehicle’s National VI Dongfeng 3308 mm wheelbase model was selected. According to publicly available tender information, the project budget was capped at approximately RMB 341,000 per unit, with the final contract price around RMB 280,000 per unit; two units were delivered. Chengli stood out due to advantages including factory-direct sales, transparent configuration, and comprehensive after-sales support. This model is built on a Dongfeng chassis, equipped with a National VI emission-compliant engine, and features a 3308 mm wheelbase—ideal for operation in narrow urban streets. Customer feedback highlights key selection reasons: nationwide chassis warranty, lifetime upper-body assembly service, and complete official vehicle announcements enabling standard registration. II. Driver Perspective: Real-World User Experience We interviewed two drivers from the municipal sanitation department, and below are their authentic insights: 1. Operational Convenience Driver Master Wang stated: “This vehicle is more maneuverable than expected—the power steering is responsive and precise, making U-turns in residential alleyways effortless.” Driver Master Li added: “The control panel for the sewage treatment system is located on the right side of the cab, with well-organized buttons—no bending required to reach them—and liquid level indicators for front/rear tanks are clearly visible.” This Chengli model comes standard with a manually operated hydraulic control valve, offering simple operation; new drivers can independently perform tasks after just half a day of training. 2. Ease of Operation for Class C License Holders With a gross vehicle weight rating (GVWR) under 4.5 tons and overall length less than 6 meters, this vehicle fully complies with China’s blue-plate Class C driving license requirements. Master Li remarked: “I previously drove passenger cars and was initially concerned about handling this vehicle—but adapted within one test drive. Gear shifting is intuitive, the clutch is light, and gear engagement is smooth. The only point requiring attention is the vehicle height (~2.5 meters), necessitating caution when passing under height-restricted barriers.” Practical testing confirmed that drivers holding a Class C1 license can achieve full operational proficiency after just one day of training—indicating low entry barriers. 3. Key Daily Usage Considerations Based on driver feedback and Chengli’s after-sales guidelines, the following points require regular attention: • Tank Cleaning: Residual sludge after sewage treatment tends to form scale; high-pressure water jet cleaning is recommended every 50 operational cycles. • Hydraulic Oil Inspection: Check hydraulic oil level monthly and replenish promptly to prevent pump overheating. • Pipeline Blockage Prevention: When treating wastewater containing large amounts of sol