How many hours apart are the license plate restriction photos taken?

[DeRuby]

License plate restriction photos are taken 4 hours apart. If photos are taken continuously within 4 hours, it counts as one violation. After that, every additional 4 hours accumulates another violation. Introduction to vehicle restriction policies: The tail number restriction policy was implemented before the Beijing Olympics to ensure smooth traffic and meet air quality standards. It later became a long-term policy, primarily to alleviate traffic pressure caused by the rapid increase of vehicles in Beijing and to reduce vehicle emissions, keeping the city's air pollution index within a reasonable range. Exempt vehicles include: Police cars, fire trucks, ambulances, engineering rescue vehicles; public buses, interprovincial long-distance passenger vehicles and large buses, taxis (excluding rental vehicles), minibuses, postal service vehicles, vehicles with tourist bus operation certificates issued by the municipal transportation management department, and unit shuttle buses and school buses approved by the municipal public traffic management department.