About road flooding assumption point

In order to prevent accidents and secure safe road traffic during local heavy rains, so-called guerrilla downpours, etc., we have published the "Road Flooding Estimated Location Map".
Please share the information on the expected flooding area and ensure safe traffic during heavy rains.

・This is a summary of "the places where the roadway has an underpass structure (*) and may be flooded during guerrilla downpours."
・It is assumed that there are cases such as abnormal short-term heavy rain (local heavy rain, so-called guerrilla downpours), and there is no problem with road traffic with normal rain.

※An underpass is a road that crosses three-dimensionally with major arterial roads and railways, where the height of the road is locally reduced (digging) compared to before and after.

Road flooding assumption location map (PDF: 534KB)
In the event of local heavy rains that occur frequently in recent years, roads may be flooded even in places other than the expected road flooding area. In the event of heavy rain, pay attention to weather information and be careful when driving the vehicle.
Individual location map (26 locations) (PDF: 8,372KB)
Click the corresponding line name below to view the corresponding page in the individual location map.

(Reference) Road flooding caution point map in the Kanto Koshin area (outside site) (Kanto Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism)