What is a "Specific Prohibited Section (Area)" for Pedestrians Only?
(325-4) The "Pedestrian Only" regulation sometimes has a supplementary sign that says "Specific Prohibited Section (Area)." This article explains what it means when this is written.

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Various supplementary signs are attached to Pedestrian Only regulatory signs
(325-4) The "Pedestrian Only" regulation may be installed with only the main sign, but in many cases, it is accompanied by supplementary signs that set various conditions. For example, the following:
● Designation of regulated dates, days of the week, times, etc.
● Designation of regulated vehicles (limited to ~, excluding ~, light vehicles and bicycles are often excluded)
● Pedestrian-only road
● Specific prohibited section (area)
"Designated/Permitted Vehicles" are excluded even if not written on the supplementary sign
Furthermore, the (325-4) "Pedestrian Only" regulation is in the same state as having the statement "excluding designated/permitted vehicles" even if nothing is written on the supplementary sign. In addition to Pedestrian Only, designated/permitted vehicles are excluded from several other traffic prohibition regulations.

Source: Metropolitan Police Department Website
"Designated/Permitted Vehicles" include emergency construction vehicles for electricity, gas, water, telephone, and railways; emergency press vehicles; vehicles transporting people with mobility difficulties; vehicles performing necessary public service tasks owned by national or local governments; and vehicles used for investigations and audits based on various laws.
Please refer to this page for details.
In short, simply put,even if the (325-4) "Pedestrian Only" regulation is in effect, there is no guarantee that vehicles will not pass through 100%, and vehicles for special tasks or vehicles with a traffic prohibition exemption mark may pass through.





Meaning of Specific Prohibited Section (Area)
When a "Specific Prohibited Section (Area)" supplementary sign is attached to a (325-4) "Pedestrian Only" regulation,"designated/permitted vehicles" are no longer excluded either. Of course, bicycles and light vehicles cannot pass either. In other words, vehicles will not pass 100%. "Specific Prohibited Section (Area)" is often added to pedestrian paradises, shopping street malls, arcades, etc. This designation is used when you want to make it a complete pedestrian paradise without allowing any emergency vehicles.



What if it specifically says "Pedestrian-only road"?
So, what if the auxiliary sign only says "Pedestrian-only road"? In fact, there are two cases where the (325-4) "Pedestrian-only" sign is installed: (1) "Pedestrian-only" regulations by the Prefectural Public Safety Commission based on the Road Traffic Act, and (2) designation of "Pedestrian-only roads" by road administrators based on the Road Act. exist.
The following is the article that serves as the basis for (2).
Article 48-13
3 A road administrator may, when deemed necessary for the safety and smooth flow of traffic, designate a section of a road or a part of a road that has not yet been opened for public use as a road or part of a road intended exclusively for general pedestrian traffic (= pedestrian-only road).
In other words, if there is an auxiliary sign that says "Pedestrian-only road," this sign is installed by the road administrator, not the Public Safety Commission.
While "Pedestrian-only" regulated by the Public Safety Commission restricts roads used by vehicles so that only pedestrians can pass, "Pedestrian-only roads" designated by road administrators are roads built for pedestrians from the start.


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Please take a look at this as well.
