Only about a third of major Japanese cities have prepared official overnight parking areas for vehicle dwellers in case of disasters. A survey found that just 28 out of 87 major municipalities have established such sites, highlighting a gap in evacuation planning for people living in camper vans or motorhomes.

Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has clarified the boundary between 'rest' and 'overnight stay' for motorhome and camper van users at 'michi-no-eki' roadside stations. The ministry permits short naps for driver fatigue recovery but discourages using the free parking for overnight accommodation. Incidents such as cooking BBQ in parking lots or washing hair in public restrooms have caused conflicts at some locations.

Legal aspects of overnight car camping at paid parking lots are under discussion in Japan. This practice may violate the terms of use set by the parking lot operator. Camper van and motorhome owners are advised to check the specific rules in advance.

Ibaraki Prefecture is revising its regional disaster risk reduction plan. The update follows amendments to the national basic disaster management plan made in July 2025. The changes expand the scope of Disaster Welfare Assistance Teams to support vulnerable people not only in evacuation centers but also those sheltering in motorhomes or at home.

Overnight stays at Japan's roadside stations are officially prohibited, creating a gray area for campervan and car users. The Ministry of Land, Infrastructure, Transport and Tourism states that while 'lodging' is not allowed, taking a nap for safe driving is permitted. Actions like setting up tables, cooking, or long-term parking are considered clear violations of the rules.

The popularity of motorhomes and car camping is rising, leading to increased incidents at roadside stations 'michi-no-eki'. While overnight stays in vehicles are not illegal per se, they may violate station rules or local ordinances, for instance, due to noise or extended parking. As an alternative, dedicated RV parks or paid campervan parking areas are recommended.

Legal questions arise over 'car camping' in parking lots of convenience stores and rest areas. A lawyer clarifies that while not illegal per se, it is often prohibited by facility rules, and violators could face civil liability for damages if they cause business losses. However, such actions typically do not constitute the criminal charge of obstruction of business.