It is the top of this page

Request limit of road traffic vibration

Last update date March 11, 2019

In this page, we speak part which we set about the details of request limit of road traffic vibration to establish in vibration regulation law in the vibration regulation law enforcement regulations.

The vibration regulation law enforcement regulations

November 10, 1976 Prime Minister's Office Order No. 10
Departmental order No. 5 environmental on revised March 5, 2001

Vibration regulation law (1976 law No. 64) Article 3 Paragraph 3 (we include case to apply mutatis mutandis in Article 4 Paragraph 3.) Article 6 Paragraph 1 and Paragraph 2 (we include case to apply mutatis mutandis in Article 7 Paragraph 2 and Article 8 Paragraph 3.) We set the vibration regulation method enforcement regulations as follows to carry out based on regulations of, Article 7 Paragraph 1, Article 8 Paragraph 1, Article 14 Paragraph 1 and Paragraph 3, Article 15 Paragraph 1 and Article 16 Paragraph 1 and the law.

-(omission) -

Article 12 (limit of road traffic vibration)

We do limit to set in environmental departmental order of law Article 16 Paragraph 1 according to the separate table second.
But prefectural governors (when is in city prescribed in Article 5 to order the mayor. It has the same as follows.) By place that, road manager and Public Safety Commissions of To, Do, and Prefectures discuss, school, hospital do limit in road around the facility needing calmness in particular more than value that reduced 5db. from lower than value value to set of the table concerned and can do limit of the first night kind area in all or a part of section of specific existing highway with value of the night second kind area.

-(omission of the latter part) -

The separate table second (Article 12 relations)
Division of areaDivision of time
In the daytimeBy night
The first class area65db. or less60db. or less
The second kind area70db. or less65db. or less


We say area that prefectural governors set of 1 first class area and second kind area as area to raise to each next issue each.

(1) Area that needs maintenance of calmness as it is offered for one of area needing maintenance of calmness in particular and house to keep environment of house having good first class area
(2) Area where it is necessary to prevent outbreak of remarkable vibration because it is area where it is necessary to prevent outbreak of vibration and area that is mainly offered for one such as industry to be area offered in addition for one such as commerce, industry for one of the second kind area house, and to keep living environment of inhabitants in the area in good condition and does not worsen living environment of inhabitants in the area

With 2 day and night, we say time when prefectural governors set within the time to raise to each next issue each.

(1) From day 5:00 a.m., 6:00, 7:00 or 8:00 to 7:00 p.m., 8:00, 9:00 or 10:00
(2) From night 7:00 p.m., 8:00, 9:00 or 10:00 to 5:00 a.m. of the next day, 6:00, 7:00 or 8:00

3db. means measurement unit of vibration acceleration level to set of the regulations of measurement separate table second.

We shall perform the measurement of 4 vibration using vibration level meter that passed condition of regulations of measurement Article 71 about lead direct direction.
In this case, it is decided that vibration perception revision circuit uses lead direct vibration properties.

Measurement location of 5 vibration assumes boundary line of site of road.

The measurement of 6 vibration shall perform the per hour one or more measurement for road traffic vibration to affect the road concerned for each in the day and night division more than four hours about 1st admitted that we represent the situation of the road traffic vibration concerned.

It is said that method for measurement of 7 vibration is as follows.

(1) It is said that setting places of vibration pickup are as follows.
Firm place where there is not i cushion and steps enough, and hardening is carried out
Place that can secure horizontal plane without ro slant and irregularities
Place that is not affected by circumstance conditions such as ha temperature, electricity, magnetism
(2) It is said that revision of influence of dark vibration is as follows.
Instructions level and dark vibration (we say thing except vibration that the measurement concerned intends for by vibration to occur in the measurement location concerned.) to affect vibration that the measurement intends for We shall reduce revision level to raise in the right column of the table every difference of instructions level to raise in the left column of the next table from instructions level to modify vibration that the measurement intends for of this when difference of instructions level is less than 10db.

Instructions level
Difference of instructions levelRevision level

We do 8 vibration levels with number that averaged number of the upper end of 80% of measurements range of the number about all for each in the day and night division at interval according to 100 or this at interval for five seconds.

Inquiry to this page

Environmental Planning Bureau environment Maintenance Division Environment Administration Division

Telephone: 045-671-3507

Telephone: 045-671-3507

Fax: 045-641-3580

E-Mail address [email protected]

Return to the previous page

Page ID: 457-851-445

We come back to the top