JA:速度制限

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利用できる言語 — Speed limits
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Logo. 地物 : 速度制限
One example for 地物 : 速度制限
説明
道路や鉄道や水路の速度制限を定義します。
タグ

道路や鉄道や水路の速度制限では、速度制限標識の位置と、速度制限取り締まりのインフラの両方をタグ付けできます。

最高・最低制限速度

道路/鉄道/水路の区間に対する最高・最低制限速度は、適切なウェイmaxspeed=* および minspeed=* で定義することができます。

これらのタグには普通は数値が入り、単位が km/h でなければ単位('mph' または 'knots')を接尾辞につけます(km/h の場合は不要)。なお、数値と単位の間にはふつう空白を開けます。ですから、 'maxspeed=30 mph' とするべきであり、 'maxspeed=30mph' は非推奨です。30 km/h の速度は単に 'maxspeed=30' とします。

同じ車道の車線ごとに異なる制限速度をタグ付けする場合の詳しい情報は、JA:車線#車線毎に最高速度が異なる場合(既定値がある場合、ない場合)を参照してください。

ウェイの方向別の制限速度については、 maxspeed:forward=* を参照してください。

安全速度

In some places there are signposted or implicit advisory speed limits. These speed limits are not legally binding (you do not have to obey to the speed they suggest) but they will typically serve for orientation at which speed you can safely drive and which speed you should expect other drivers to drive there. These can be tagged with maxspeed:advisory=*. In case of additional qualifiers it is suggested that you keep the maxspeed:advisory part intact, e.g. maxspeed:advisory:forward=* or maxspeed:advisory:conditional=*.

Signage

The position of the actual speed limit signs can be added as nodes beside the road/railway/waterway as additional information. This should be tagged with traffic_sign=maxspeed (or traffic_sign=minspeed as appropriate) and information about the speed limit itself, for example maxspeed=50 for a speed limit sign displaying 50 km/h.

Signs that cancel current speed limits (hence setting the default limit) should be mapped as

Enforcement

Fixed speed cameras can be marked using highway=speed_camera as a node at the location of the camera. For average speed limits use maxspeed:enforcement=* (or alternatively enforcement:maxspeed=*) on the way or the JA:Relation:enforcement. For physical measures on the road see traffic_calming=*.

Legal form and source information, country-specific trends

The meaning of the tag source:maxspeed=* to store information about the legal form of the speed limit (see 'legal form' below for an explanation of this) and the way the data was collected (see 'source' below) is recently disputed by some mappers from the UK (see Situation in the UK below). The international, longest standing and mostly used meaning of source:maxspeed=* is to hold information about the legal form of the speed limit.

'legal form' information

Sometimes a speed limit is given by a nearby sign with a numeric limit, in others the speed limit is given as a legal category where the actual numeric value is prescribed by legislation. By way of example, the speed on motorways in the UK is not shown as a number, but by a diagonal line which for the time being relates to a particular numeric speed of 70 mph for motorways and dual-carriageways and 60 mph for single carriageways.

Some people suggest that source:maxspeed=* should be used for this, others suggest use of maxspeed:type=*. Whichever tag is used, there is agreement that the form of this data should be of the form <country-code>:<category> where the first two letters (in capitals) form a country code and rest defines the type of the limit. By way of example: use 'DE:urban' for the German limit as used in towns, and 'GB:national' for the 'unrestricted' sign found on motorways and other fast roads in the UK.

'source' information

If maxspeed:type=* is being used to hold information about the legal form of the speed limit then source:maxspeed=* can be used to hold information about how the information was gathered. For example source:maxspeed=survey) where the information was collected by a manual ground survey or source:maxspeed=massgis where the date came from an official Massachusetts source in the USA (use suitable text to describe your source). Some people add a date to this, for example source:maxspeed=survey 12 May 2012

Situation in the UK

Some mappers in the UK have subsequently decided to use a different tag maxspeed:type=* for the legal form and use source:maxspeed at object level to hold meta information about how the data was collected. An alternative is also source:maxspeed=*, but generally there is an agreement that source tags should go to the changeset and not to the objects.

Situation in Romania

In a small number of places, notably Romania, the maxspeed tag is used to hold a value of the form '<country-code>:<category>' instead of (source:maxspeed or maxspeed:type).

Country code/category conversion table

Please note, you should tag both, the implied maxspeed explicitly and the source:maxspeed for the reason (sign or country specific area). Commonly used values:

Country value numeric equivalent
オーストリア AT:urban 50
AT:rural 100
AT:trunk 100
AT:motorway 130
スイス CH:urban 50
CH:rural 80
CH:trunk 100
CH:motorway 120
チェコ共和国 CZ:urban 50
CZ:rural 90
CZ:trunk 130 (outside city), 80 (in city)
CZ:motorway 130 (outside city), 80 (in city)
デンマーク DK:urban 50
DK:rural 80
DK:motorway 130
ドイツ DE:living_street 7
DE:urban 50
DE:rural 100
DE:motorway none
フィンランド FI:urban 50
FI:rural 80
FI:trunk 100
FI:motorway 120
フランス FR:urban 50
FR:rural 90
FR:trunk 110
FR:motorway 130
ハンガリー HU:urban 50
HU:rural 90
HU:trunk 110
HU:motorway 130
イタリア IT:urban 50
IT:rural 90
IT:trunk 110
IT:motorway 130
日本 JP:national 60
JP:motorway 100
ルーマニア RO:urban 50
RO:rural 90
RO:trunk 100
RO:motorway 130
ロシア連邦 RU:living_street 20
RU:rural 90
RU:urban 60
RU:motorway 110
スロバキア SK:urban 50
SK:rural 90
SK:trunk 130 (市外), 90 (市内)
SK:motorway 130 (市外), 90 (市内)
スロベニア SI:urban 50
SI:rural 90
SI:trunk 110
SI:motorway 130
スウェーデン SE:urban 50
SE:rural 70
SE:trunk 90
SE:motorway 110
イギリス GB:nsl_single 60 mph
GB:nsl_dual 70 mph
GB:motorway 70 mph
ウクライナ UA:urban 60
UA:rural 90
UA:trunk 110
UA:motorway 130

Tools

JOSM

The internal JOSM mappaint style displays maxspeed values tagged on nodes as maxspeed signs. You can also add the map paint style Maxspeed (Preferences -> Map Settings -> Map Paint Styles) and this will show the ways with a maxspeed.

ITO Map

See also