Vehicle-mounted Mobile Toilet Cases

Here are several typical case analyses of vehicle-mounted mobile toilets:

I. Seres' 'Vehicle-mounted Toilet and Vehicle' Patent: An Innovative Toilet Solution for New Energy Vehicles
On April 10, 2026, the National Intellectual Property Administration approved Seres' utility model patent for a 'vehicle-mounted toilet and vehicle' (authorization announcement number CN224104011U). Designed for long-distance self-driving scenarios in new energy vehicles, this design employs a sliding rail structure, with the toilet body concealed beneath the driver and passenger seats, and can be extended or retracted with a single button operation. Its core configurations include:

• 5L Sealed Waste Collection Tank: Utilizes physical sealing technology to prevent odor leakage, complemented by a negative pressure odor removal system to further purify the air;
• Constant Temperature Heating Function: Maintains seat temperature through electric heating elements, enhancing comfort during winter use;
• Disposable Toilet Bags: Users can replace them themselves, reducing cleaning frequency;
• Foldable Privacy Curtain: Forms an independent space when extended, ensuring privacy.
  The patent was applied for on April 22, 2025, and was authorized after nearly a year of review, reflecting the in-depth exploration of user needs for long-distance travel in the new energy vehicle sector, particularly suitable for scenarios with insufficient traditional toilet coverage, such as highway traffic jams and remote areas.

II. Hebei Woman Carried onto Highway in Mobile Toilet Incident: A Warning Case for Safety Management
On May 11, 2023, an accident occurred in Hebei due to the start-up of a transport vehicle: a woman was using the toilet in a mobile toilet when the driver started the vehicle without checking the compartment status, causing the toilet to be carried onto the highway. The incident exposed two major issues:

• Lack of Operational Procedures: The transport vehicle failed to follow the safety procedure of 'checking the compartment before start-up', with the noise from the lifting equipment drowning out cries for help;
• Equipment Fixing Hazards: The connection method between the mobile toilet and the transport vehicle may have design flaws, lacking anti-misoperation interlock devices.
  This case serves as a negative example for safety management in the transportation of mobile toilets, emphasizing the need to reduce risks through technological improvements (such as installing sensors) and procedural norms (such as a dual-confirmation system).

III. Mobile Public Toilet Vehicle in Kunming Dianchi National Tourism Resort: Customized Design for High-traffic Scenarios
The mobile public toilet vehicle introduced in the Kunming Dianchi Resort has been upgraded with functions tailored to the characteristics of high tourist traffic during peak seasons:

• Space Optimization: The women's toilet has 5 stalls, the men's toilet has 3 stalls + 3 urinals, with a total capacity of 11 people, and 2 additional disabled-accessible stalls (one each for men and women);
• Environmental Control: Each stall is equipped with air conditioning and a fresh air system, and the sinks are connected to tap water, enhancing the user experience;
• Emergency Support: Each stall has an emergency button for quick contact with management personnel;
• Environmental Protection Treatment: The wastewater tank and freshwater tank are designed separately, and when full, they are transported by an environmental protection suction vehicle to a professional disposal site to avoid secondary pollution.
  This case demonstrates the transformation of mobile public toilets from 'basic functions' to 'humanized services', with their modular design enabling flexible deployment in temporary high-demand scenarios such as scenic spots and exhibitions.