OSM tags for routing/Maxspeed

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This article is about default speed limits applicable for roads which are not tagged with maxspeed=*.

Default speed limits

The tables in this section provide information about speed limits for various different classes of vehicle in a range of countries. The is_inside->Country tag is often used to determine what country a location is inside of. Calculation of route cost typically involves dividing by the speed and adding penalties for obstacles. To this end, the number must be a divisor that results in a real number, non-zero. Where maxspeed=* and source:maxspeed=* are available this information should be used.

Some Routing applications will make use of numbers in this table for the relevant country.

Default speed limits by country

Motorcar

	Maxspeed in km/h, driving a motorcar
	Motorway		Trunk		Primary		Secondary		Tertiary		Unclassified		Residential		Living street
Country		link	outside place=	inside place=	outside place=	inside place=	outside place=	inside place=	outside place=	inside place=	outside place=	inside place=	outside place=	inside place=
Austria	130	130	100 (*7)		100 (*7)		100 (*7)		100 (*7)		100 (*7)		50 (*7)		7 (*8)
Azerbaijan	110	80	80	50	80	50	80	50	80	50	70	50	50	50	20
Belgium	120		90	50	90	50	90	50	90	50	90	50	90	50	20
Bulgaria	130		90	50	90	50	90	50	90	50	90	50	90	50	20
Czech Republic	130		90	50	90	50	90	50	90	50	90	50	90	50	20
Denmark	130		80	80	80	50	80	50	80	50	80	50	80	50	15
Estonia	90	90	90	50	90	50	90	50	90	50	90	50	90	50	20
Finland	120	80	100	60	80	50	80	50	60	50	80	50	80	50	20
France	130		110	110	90	50	90	50	90	50	90	50	90	50	20
Germany	130 (*1)	80	130 (*1)	50	100	50	100	50	100	50	100	50	100	50	4 (*2)
Hungary	130		110	110	90	50	90	50	90	50	90	50	90	50	20
India	180	120	80	50	80	50	80	50	80	50	80	50	80	50	20
Iran	120	90	110	70	100	50	100	50	100	50	100	50	80	50	20
Ireland	120	120	100	100 (*3)	100	100 (*3)	80	80 (*3)	80	80 (*3)	80	80 (*3)	80	80 (*3)	N/A
Flag of Isle of Man Isle of Man, United Kingdom	UL (*6)	UL (*6)	UL (*6)	50	UL (*6)	50	UL (*6)	50	UL (*6)	50	UL (*6)	50	UL (*6)	30	20
Israel	110	90	100	100	80	50	80	50	80	50	80	50	80	50	15
Monaco	N/A	N/A	N/A	50	N/A	50	N/A	50	N/A	50	N/A	50	N/A	30	20
Netherlands	120		100	100	80	50	80	50	80	50	80	50	80	50	15
Lithuania	130/110 (*5)	90	110/100 (*5)	50	90	50	90	50	70	50	70	50	90	50	20
Romania	130		100	50	90	50	90	50	90	50	90	50	90	50	20
Russia	110	90	90	60	90	60	90	60	90	60	90	60	90	60	20
Spain	120		100	50	90	50	90	50	90	50	90	50	90	50	20
Sweden	110		90	70	90	50	70	50	70	50	70	50	50	50	5
Norway	80		80	60	80	50	70	50	50	30	50	30	50	30	5
Ukraine	130	90	110	60	90	60	90	60	90	60	90	60	90	60	20
Turkey	120	90	110	70 (*4)	90	50	90	50	70	50	50	30	50	30	20
Turkish Republic of Northern Cyprus	100	80	100	50	100	50	90	50	80	50	50	30	50	30	20

(*1): using maxspeed=130 here, though there is no actual speed limit but a recommended speed of 130 km/h

(*2): using maxspeed=4, though in actual case it's defined as "walking pace" - 4 km/h is the lowest possible set speed defined by a german court

(*3): Urban limits require an explicit speed limit sign which must be mapped as maxspeed. Urban boundaries cannot easily be inferred by drivers.

(*4): Urban speed limits vary city to city for trunk roads. 70km/h is the maximal value. Possible values are: 50km/h, 60km/h, 70km/h.

(*5): From april 1st to october 31nd / From november 1st to march 31st

(*6): In the Isle of Man, there is no speed limit at all in interurban roads.

(*7): It is not possible to distinguish outside/inside place, because place=* is usually set on nodes, not on areas. If maxspeed differs from default, maxspeed=* (possibly with source:maxspeed=*) is explicitly set.

(*8): Walking pace by law. This is not clearly defined. In practice, nobody drives slower than 20 km/h.

HGV

	Maxspeed in km/h, driving a HGV
	Motorway	Trunk		Primary		Secondary		Tertiary		Unclassified		Residential		Living_street
Country		outside place	inside place	outside place	inside place	outside place	inside place	outside place	inside place	outside place	inside place	outside place	inside place
Hungary	80	70	70	70	50	70	50	70	50	70	50	70	50	20
Netherlands	80	80	80	80	50	80	50	80	50	80	50	80	50	15
Turkey	90	85	60 (*1)	80	50	80	50	70	50	50	30	50	30	10
Turkish Republic of Northern Cyprus	85	75	50	75	50	75	50	60	50	50	30	50	30	10

(*1): Urban limits change among cities.60 km/h is the maximal value.

Bus

	Maxspeed in km/h, driving a Bus or a Minibus
	Motorway	Trunk		Primary		Secondary		Tertiary		Unclassified		Residential		Living_street
Country		outside place	inside place	outside place	inside place	outside place	inside place	outside place	inside place	outside place	inside place	outside place	inside place
Turkey	100	90	70	80	50	80	50	70	50	50	30	50	30	20
Turkish Republic of Northern Cyprus	100	100	50	100	50	90	50	80	50	50	30	50	30	20

Trailed HGVs

	Maxspeed in km/h, driving a Trailed HGV (e.g. TIR-articulated Trucks)
	Motorway	Trunk		Primary		Secondary		Tertiary		Unclassified		Residential		Living_street
Country		outside place	inside place	outside place	inside place	outside place	inside place	outside place	inside place	outside place	inside place	outside place	inside place
Turkey	80	75	60	70	50	70	50	60	50	50	30	50	30	20

Maxspeed in Bridleways, in Cycle Roads and in Roads under Construction

	Maxspeed in km/h, driving appropriate vehicle
	Road under Construction			Cycleway	Bridleway	Service Road	Track Road							Footway
Country	Motorway under construction	outside place	inside place				paved	gravel	stones	grass	dirt	rock	unpaved
Turkey	50	50	30	50	30	30	50	20	20	20	10	20	50	30

Agricultural

Country	Maxspeed in km/h, driving an agricultural vehicle
Turkey	40
Europe *	40

For this table, Europe covers:

-The whole EU -Switzerland

Hazmat

This section covers vehicles carrying hazardous materials. There are usually three categories classified according to amount of the hazardous material.

	Maxspeed in km/h, driving a goods vehicle carrying a hazardous material															Category
	Motorway		Trunk		Primary		Secondary		Tertiary		Unclassified		Residential		Living_street	A, B, or C
Country		link	outside place=	inside place=	outside place=	inside place=	outside place=	inside place=	outside place=	inside place=	outside place=	inside place=	outside place=	inside place=		A is the heaviest one
Turkey	60	60	50	50	50	30	50	30	50	30	30	30	30	30	-1	AB

Additional information for selected countries

This section contains additional information for a selection of countries.

Austria

Outside a city-area:

default: 100 km/h
highway=motorway, highway=motorway_link - 130 km/h

Inside a city-area:

default: maxspeed=50 km/h
highway=living_street maxspeed=7 km/h ("Schrittgeschwindigkeit" = walking pace). Note that vehicle=destination, bicycle=yes and bicycle=opposite are also implied.

Depending on the vehicle type lower limits might apply (These are not yet documented here. Please add.).

Belarus

highway=motorway - 110 km/h for cars, 90 km/h for others (unless other is given)
highway=trunk - 90 km/h unless other is given
highway=primary - 90 km/h
highway=secondary - 90 km/h
highway=tertiary - 90 km/h
highway=residential - 60 km/h
highway=service - 20 km/h

Inside a city-area:

default: 60 km/h (unless other is given)
highway=primary - 60 km/h
highway=secondary - 60 km/h
highway=tertiary - 60 km/h
highway=residential - 60 km/h
highway=living street - 20 km/h
highway=service - 20 km/h

Belgium

highway=motorway, highway=motorway_link - 120 km/h
Inside built-up area (bebouwde kom):
- everything has default maxspeed 50 km/h
- highway=living_street - 20 km/h
Outside built-up area:
- dual carriage with in each direction minimum two lanes: 120 km/h
- otherwise: 90 km/h (may change to 70 km/h in Flemish Region soon; Wallonia will keep the default 90 km/h limit)

Bulgaria

highway=motorway - 130 km/h

Outside a city-area:

default: 90 km/h

Inside a city-area:

highway=residential - 50 km/h
highway=living_street - 20 km/h

Canada

highway=motorway - 100 km/h (some motorways have 90 to 110 km/h limit)
highway=primary - 80 to 90 km/h
highway=secondary - 50 to 70 km/h
highway=tertiary - 50 km/h
highway=residential - 40 to 50 km/h, often 30 km/h in school zones

Croatia

highway=motorway - 130 km/h
highway=primary - 90 km/h (50 km/h in urban area)
highway=secondary - 90 km/h (50 km/h in urban area)
highway=tertiary - 90 km/h (50 km/h in urban area)
highway=residential - 50 km/h

Czech Republic

Outside a city-area:

default - maxspeed=90 km/h
highway=motorway - maxspeed=130 km/h
highway=motorway_link - maxspeed=130 km/h

Inside a city-area:

default - maxspeed=50 km/h
highway=living_street maxspeed=20 km/h
highway=motorway - maxspeed=80 km/h
highway=motorway_link - maxspeed=80 km/h

Denmark

highway=motorway - 130 km/h
highway=primary - 80 km/h
highway=secondary - 80 km/h
highway=tertiary - 80 km/h
highway=unclassified - 80 km/h

Inside a city-area:

default: 50 km/h

Set in relation:type=defaults 1124103 (XML, check, manage, JOSM, history, view, gpx )

Estonia

Outside a city-area:

default: 90 km/h

Legal but unrealistic on many roads below tertiary.

Inside a city-area:

default: 50 km/h

Finland

highway=motorway - 120 km/h (winter: 100 km/h)
highway=trunk - 100 km/h (winter: 80 km/h)
highway=primary - 80 km/h
highway=secondary - 80 km/h
highway=tertiary - 60 km/h
highway=residential - 40 km/h
highway=living street - 20 km/h

Inside a city-area:

default: 50 km/h

These have originally been selected on basis of values expected to be the most often encountered for each type. Default limit inside built up areas is 50 km/h but most roads classified as residentials are posted lower. Unposted roads are rare so most should be tagged with maxspeed, anyway.

There's a convention of tagging lowered (120 -> 100, 100 -> 80 on some roads) winter-time maxspeeds with maxspeed:seasonal:winter (or maxspeed:winter) which could have some effect on route calculation, as the speed advantage of some bigger roads diminishes.

France

highway=motorway - 130 km/h (110 km/h in rain!)
highway=trunk,trunk_link,... - 110 km/h
highway=primary,secondary,tertiary - 90 km/h
highway=residential - 50 km/h

Inside a city-area:

default: 50 km/h

Set in relation:type=defaults 934933 (XML, check, manage, JOSM, history, view, gpx )

Germany

for motorcar / goods / motorcycle

vehicle-type: motorcar=yes (default if unknown vehicle-type)

valid also for goods=yes ('light' goods vehicle)

valid also for motorcycle=yes

road conditions	maxspeeds in km/h	Additional Info
`highway=motorway`	`maxspeed=none`	"recommended speed" of 130 km/h. Also See: Proposed features/maxspeed none
`highway=*` + `motorroad=yes` + `oneway=yes` (means directions are seperated/segregated) + `lanes=2+`	`maxspeed=none`	Gelbe Autobahnen (Dual carriageways) with separated lanes have the same limits as `highway=motorway`
`highway=*` + `zone:traffic=DE:rural`	`maxspeed=100`	Outside a city-area
`highway=*` + `zone:traffic=DE:urban`	`maxspeed=50`	Inside a city-area
`highway=*` + `bicycle=designated`	`maxspeed=30`	Fahrradstraßen with extra-signs to allow other vehicles. Oberlandesgericht Karlsruhe (german court) judges that "moderate speed" should be lower than 30 km/h
`highway=living_street`	`maxspeed=walk`	`maxspeed=walk` is not yet an approved key. 10 km/h can be assumed. (court-decision)

for 'heavy goods vehicle' (hgv)

vehicle-conditions: hgv=yes

applies to vehicles with maxweight > 3,5 t

road conditions	maxspeeds in km/h	Additional Info
`highway=*` + `zone:traffic=DE:rural` - Outside a city-area	`maxspeed:hgv=60`
`highway=*` + `zone:traffic=DE:urban` - Inside a city-area	`maxspeed:hgv=50`
`highway=*` + `bicycle=designated`	`maxspeed:hgv=30`	Fahrradstraßen with extra-signs to allow other vehicles. Oberlandesgericht Karlsruhe (german court) judges that "moderate speed" should be lower than 30 km/h
`highway=living_street`	`maxspeed:hgv=walk`	10 km/h can be assumed.

for bicycles

vehicle-conditions: bicycle=yes

road conditions	maxspeeds in km/h	Additional Info
`highway=*`	`maxspeed:bicycle=none`	there is no explicit default-maxspeed-limit for bicycles in Germany. Law only assign them to drive appropriate and watchfully. (§ 1 I + II StVO)
`highway=*` + `foot=yes/designated/official` + `bicycle=yes/designated/official` + `segregated=no`	`maxspeed:bicycle=moderate`	Only where there is `segregated=no` or NOT `segregated=yes`. As segregated has no default 'no' should be assumed when missing. (§ 41 II Nr. 5e StVO)
`highway=pedestrian` + `bicycle=yes/designated/official`	`maxspeed:bicycle=walk`	Fußgängerzone with extra-signs to allow bicycles (often with limited times i.e. 18-09 o'clock)
`highway=living_street`	`maxspeed:bicycle=walk`	verkehrsberuhigter Bereich

in Germany there are 6 main trafficzones.

pedestrian areas ( -> highway=pedestrian)
traffic-calmed areas (-> highway=living_street)
30-Zone
urban (roads inside closed settlements)
rural (roads outside closed settlements)
like_motorway (motorway -like roads)

Hungary

Maxspeeds in km/h
`highway=*`	motorcar	hgv	psv	moped	bicycle
motorway	130	80	100	-	-
trunk	110	70	70	-	-
out of urban: primary, secondary, tertiary, unclassified, road	90	70	70	40	50
inside urban: primary, secondary, tertiary, residential, road	50	50	50	40	40
living_street	20	20	20	20	20
cycleway	-	-	-	-	30
footway+cycleway	-	-	-	-	20
footway	-	-	-	-	10

Ireland

road conditions	maxspeeds in km/h	Additional Info
* `highway=motorway`	120 km/h
* `highway=trunk`	100 km/h	(National Primary N1 - N33)
* `highway=primary`	100 km/h	(National Secondary N51 - N87)
* `highway=secondary`	80 km/h	(Regional R101 - R999)
* `highway=tertiary`	80 km/h	(Important Local Roads)
* `highway=unclassified`	80 km/h	(Less important Local Roads)
* `highway=residential`	80 km/h	(In a built-up area the limit is likely to be 50km/h, but this must be displayed on an official sign and maxspeed tagged accordingly)
* `highway=living_street`	N/A	There is no legally classified concept of living street in the Republic of Ireland and this tag should never be used

There are also special speed limits set by local authorities (30 km/h, 60 km/h, 80km/h or 100km/h) The 30km/h zones are generally near schools and in city centre rather than on residential streets.

Road Traffic Act 2004 http://www.irishstatutebook.ie/2004/en/act/pub/0044/sec0005.html

Israel

road conditions	maxspeeds in km/h	Additional Info
* `highway=motorway`	100-110 km/h	(National roads 1,2,4,6,431 )
* `highway=trunk`	90 km/h	(National roads 3,7,4,20,22 )
* `highway=primary`	50 km/h	(Important Local Roads)
* `highway=secondary`	50 km/h	(Important Local Roads)
* `highway=tertiary`	50 km/h	(Important Local Roads)
* `highway=unclassified`	50 km/h	(Less important Local Roads)
* `highway=residential`	50 km/h	(In a built-up area the limit is likely to be 50km/h, but this must be displayed on an official sign and maxspeed tagged accordingly)
* `highway=living_street`	30 km/h	There is no legally classified concept of living street in the Republic of Ireland and this tag should never be used

There are also special speed limits set by local authorities (30 km/h, 60 km/h, 80km/h or 100km/h) The 30km/h zones are generally near schools and in city centre rather than on residential streets.

Road Traffic Wiki: http://he.wikipedia.org/wiki/%D7%9B%D7%91%D7%99%D7%A9_%D7%9E%D7%94%D7%99%D7%A8 WikiProject on OSM: http://wiki.openstreetmap.org/wiki/WikiProject_Israel#Conventions

Italy

`highway=*`	maxspeeds in km/h
`highway=*`	urban	interurban
`highway=motorway` - (Autostrade)	---	130
`highway=trunk` - (Superstrade con motorroad=yes)	70	110
`highway=primary`	50	90
`highway=secondary`	50	90
`highway=tertiary`	50	90
`highway=unclassified`	50	70
`highway=residential`	50	---

Kosovo

`highway=motorway`	130
`highway=trunk`	110
`highway=primary`	100
`highway=secondary`	80
`highway=residential`	50

Luxembourg

highway=motorway - 130 km/h when dry, 110km/h when wet
Inside built-up area:
- maxspeed 50 km/h
- highway=living_street - 30 km/h
Outside built-up area: 90 km/h

Moldova

Outside a city-area:

default: 90 km/h

Inside a city-area:

default: maxspeed=60 km/h
highway=living_street maxspeed=20 km/h.

Netherlands

highway=motorway - 120 km/h
highway=trunk - 100 km/h
highway=living_street - 15 km/h
all other are not possible to implicit assign a maxspeed
- inside City: 50 km/h
- outside: 80 km/h

If your towing a trailer <=3 500 kg max speed 90km/h otherwise 80km/h. Busses/trucks max speed 80km/h except t100bus like in germany even the same german permit is valid. "Official" link [1]

Norway

Legal text:

Densely populated areas - 50 km/h
Outside densly populated areas - 80 km/h

Legal text:

highway=living_street - walking speed (not defined)

Philippines

Rural areas

highway=motorway - 120 km/h
highway=trunk - 120 km/h
highway=primary - 100 km/h
highway=secondary - 80 km/h
highway=tertiary - 60 km/h
highway=residential - 50 km/h
highway=service - 30 km/h

Urban areas

highway=motorway - 80 km/h
highway=trunk - 80 km/h
highway=primary - 80 km/h
highway=secondary - 60 km/h
highway=tertiary - 60 km/h
highway=residential - 40 km/h
highway=living street - 30 km/h
highway=service - 30 km/h

Note: Most intersections and *_link roads have a maximum speed limit of 40 km/h.

Poland

Outside a city-area:

default: 90 km/h; oneway=yes with lanes>=2 : 100 km/h

highway=motorway - 140 km/h
highway=trunk - 100 km/h
highway=trunk with oneway=yes - 120 km/h

Inside a city-area:

default: 50 km/h; night (23-5) - 60 km/h
highway=living_street - 20 km/h

Russia

Outside a city-area (see article 10.3 of Traffic rules / Правила дорожного движения, пункт 10.3):

cars and trucks lighter than 3,5 tons: highway=motorway — 110 km/h, other roads — 90 km/h;
intercity and small buses and motorbikes — 90 km/h;
other buses, cars with trailer, trucks heavier than 3,5 tons: highway=motorway — 90 km/h, other roads — 70 km/h;
trucks with people in basket — 60 km/h;
vehicles with organized children groups — 60 km/h.

Inside a city-area (see article 10.2):

default — 60 km/h (may be increased for several streets by local authorities but no more than on highway=motorway — 110 km/h);
highway=living_street — 20 km/h

Romania

Notes:

Currently (30 March 2009) there are no express ways and no plans to build such roads are known of.
Service roads have no legislated speed, but are usually marked locally with speed varying from 5 to 20 km/h

Outside a city-area:

default - highway=primary, highway=secondary, highway=tertiary 90 km/h
motorway - highway=motorway - 130 km/h
European and express ways - (soon all tagged as) highway=trunk - 100 km/h

Inside a city-area:

default: 50 km/h;
highway=living_street - 20 km/h

Serbia

Outside urban:

highway=motorway (Auto-put) - 120 km/h
highway=trunk (Put rezervisan za saobracaj motornih vozila) - 100 km/h
highway=primary (Magistralni put/Glavni Put)- 80 km/h
highway=secondary (Put drugorazredne važnosti) - 80 km/h
highway=tertiary (Ostali Putevi) - 80 km/h
default - 80 km/h

Inside urban:

default - 50 km/h

Slovakia

highway=motorway - outside city area 130 km/h , inside city area 90 km/h
highway=trunk - outside city area 130 km/h , inside city area 90 km/h
highway=primary - 90 km/h
highway=secondary - 90 km/h
highway=tertiary - 90 km/h
highway=residential - 50 km/h

Spain

highway=motorway: 120 km/h.
Roads with a berm side with pavement width of 1.50 m or more: 100 km/h (usually almost all highway=trunk roads, but not always).
Roads and urban crossings: 50 km/h
Other routes out of town or place inhabited: 90 km/h

Switzerland

highway=motorway - 120 km/h
highway=trunk - 100 km/h
highway=primary,secondary,tertiary - 80 km/h
highway=residential - 50 km/h
highway=living_street - 20 or 30 km/h
all other are not possible to implicit assign a maxspeed
- inside city: 50 km/h
- outside: 80 km/h

Turkey

`highway=*`	maxspeeds in km/h
`highway=*`	urban	interurban
`highway=motorway` - (Otoyol)	---	120
`highway=motorway_link` - (Otoyol Bağlantısı)	---	90
`highway=trunk` - (Bölünmüş yol)	70*	110
`highway=primary`	50	90
`highway=secondary`	50	90
`highway=tertiary`	50	70
`highway=unclassified`	30	50
`highway=residential`	30	50
`highway=living_street`	20	---

(*) Changes among cities. 70km/h is the maximal value of urban speed limit.

Ukraine

highway=motorway - 130 km/h
highway=trunk + oneway=yes (means directions are sepаrated/segregated) + lanes=2+ - 110 km/h unless other is given
highway=trunk - 90 km/h
highway=primary - 90 km/h
highway=secondary - 90 km/h
highway=tertiary - 90 km/h
highway=residential - 90 km/h

Inside a city-area:

default: 60 km/h (unless other is given)
highway=primary - 60 km/h
highway=secondary - 60 km/h
highway=tertiary - 60 km/h
highway=residential - 60 km/h
highway=living street - 20 km/h
highway=service + living_street=yes - 20 km/h

United Kingdom

Speed limits are in miles per hour and normally use a 'xx mph' format, ie: 'maxspeed=30 mph'.

For motorcars and motorcycles

For highway=motorway the maximum speed is normally 70 mph (~113 km/h).
For dual carriageways, often tagged as highway=trunk with oneway=yes - 70 mph (~113 km/h)
In "Built-up area" (including many highway=residential roads with those with street lighting (tagged lit=yes)and without speed limit signs indicating to the contrary the speed limit is 30 mph (~48 km/h)
For other roads where a numeric limit is not defined the limit is - 60 mph (~97 km/h)

A built up area is generally defined as an area where regular street lighting is provided , unless a higher speed limit is signed. Some lit streets may have a National Speed limit sign (maxspeed=national) - in which case refer to the highway list above for actual maxspeed.

Recommended tagging

Most contributors add a numeric speed limit (including ' mph' at the end) to the maxspeed tag. For roads signed using the national non-numeric speed limits signs it is generally recommended that one also adds GB:motorway, GB:nsl_dual or GB:nsl_single to maxspeed:type=* (alternatively maxspeed:source=*).
A minority of contributors advocate placing these textual vlaues in maxspeed itself, and a few people suggest using maxspeed=national rather than GB:xxx.
The advantage of the numeric tag in maxspeed is that any downstream system can understand what to do without needing a look-up table. The advantage of the tags that start GB: is that systems can be easily determine that the road is in Great Britain. Some contributors recommend that residential streets should always be given a maxspeed value if this is known so that it is clear that the street has been surveyed; others suggest that it can be left blank and the downstream system will assume that the speed limit is 30 mph rather than 'unknown'.
This section used to recommend UK: as the prefix. This is non-standard internationally; the ISO 3166-1 alpha-2 code for Great Britain is "GB". The two should be treated as eqivalent by data consumers since "UK" is a code reserved by request of the United Kingdom, but it its better for data producers to write GB:nsl_dual, GB:nsl_single, or GB:motorway and correct existing instances.

Notes

It is not easy to identify dual carriageways reliably since not all one-way streets are dual cariageways.
20 mph limits are becoming more common in residential areas.
On many single carriageways roads the average travelling speeds is often below the legal maximum speed limit due either to traffic levels or to the physical characteristics of the road. In 2007, Government statistics suggest an average travelling speed for cars of 48 mph on rural single carriageway A-roads (77 km/h) (from a sample of 50,000 vehicles). For rural dual carriageway A-roads and motorways this was 70 mph (~113 km/h) (from a sample of 468,000 vehicles).
Different speed limits apply to many different types of vehicle, e.g. HGVs, coaches, cars towing etc. For HGVs, the limits are 60 mph (~97 km/h), 50 mph (~80 km/h) and 40 mph (~64 km/h) for motorway, dual carriageway and single carriageway respectively. In practice large HGVs are mechanically governed to 56 mph (90 km/h) - and on non-motorway roads in 2007, over 75 % of HGVs exceeded their speed limits.
As of the start of 2012, the UK government is currently discussing an increase of the GB:motorway limit from 70 mph to 80 mph.

United States of America

Speed limits in the USA are defined in miles per hour and are normally coded in the format 'xx mph'. Regulations vary by state.

As far as I know, most other states not listed here vary primarily in motorway speeds. 70 and 75 mph are common.

In built-up areas, even primary will often slow to 25 mph. These speeds are dependent more on the physical attributes of the road than the road's designation.

New York

highway=motorway: 65mph (~105 km/h)
highway=trunk, highway=primary, highway=secondary, highway=tertiary, highway=unclassified: 55mph (~89km/h)
highway=residential: 30mph (~48 km/h)

Oregon

highway=motorway, highway=trunk, highway=primary: 55 mph (~89 km/h)
highway=secondary: 35 mph (~56 km/h)
highway=tertiary: 30 mph (~50 km/h)
highway=residential: 25 mph (~40 km/h)
highway=service: 15 mph (~25 km/h)

Wisconsin

highway=motorway,highway=trunk: 65 mph (~105 km/h)
highway=primary: 55 mph (~89 km/h)
highway=tertiary: 45 mph (~72 km/h)
highway=unclassified: 35 mph (~56 km/h)
highway=residential: 25 mph (~40 km/h)

Proposals

Trafficzone

Also: Proposed features/trafficzone‎.

Default speeds

Default is a proposal (not yet fully drafted, no RFC, no voting yet) for a possible, upcoming default value system. This proposal may set default maxspeeds by area (countries, states...) if it becomes general accepted practice.

Implicit maxspeeds set by "trafficzone" and "highway"

mapping of **`zone:traffic=*`** to **highway** for maxspeed-purposes
valid for	tag	alias	comment
Germany	`highway=motorway`	`zone:traffic=DE:motorway`	-
Germany	`highway=living_street`	`zone:traffic=DE:pedestrian`	-
Germany	`highway=pedestrian`	`zone:traffic=DE:pedestrian`	-

**trafficzone** to **maxspeed** derivations
trafficzone	derived tags	comment
`zone:traffic=DE:motorway`	`maxspeed=none` + `maxspeed:goods=80` + `maxspeed:psv=80` + `maxspeed:hgv=80`	-
`zone:traffic=DE:rural`	`maxspeed=100` + `maxspeed:goods=80` + `maxspeed:psv=80` + `maxspeed:hgv=60` + `maxspeed:bicycle=no`	-
`zone:traffic=DE:urban`	`maxspeed=50` + `maxspeed:bicycle=no`	-
`zone:traffic=DE:pedestrian`	`maxspeed=7` `source:maxspeed=DE:walk` OR `maxspeed=DE:walk`	-
`zone:traffic=TR:motorway`	`maxspeed=120` + `maxspeed:hgv=90` + `maxspeed:hazmat=60`	-
`zone:traffic=TR:urban`	`maxspeed=50`	-

more implication see: Proposed_features/trafficzone#Examples, also have a look at source:maxspeed=*

**maxspeed-string** to **maxspeed-integer** derivations for motorcars
maxspeed tag	derived value	comment
`maxspeed=DE:walk`	7
`maxspeed=DE:urban`	50
`maxspeed=DE:rural`	100
`maxspeed=none`	250	`maxspeed=no` has also been used for this.
`maxspeed=signals`	-	Do not assume any maxspeed! `maxspeed=variable` has also been used for this.
`maxspeed=default`	-	Should be changed to `maxspeed=<country code>:<zone name>`
`maxspeed=city_limits`	-	Should be changed to `maxspeed=<country code>:urban`
`maxspeed=unknown`	-	Should be removed
`maxspeed=<different>`	-	Should be removed

OSM tags for routing/Maxspeed

Contents

Default speed limits

Default speed limits by country

Motorcar

HGV

Bus

Trailed HGVs

Maxspeed in Bridleways, in Cycle Roads and in Roads under Construction

Agricultural

Hazmat

Additional information for selected countries

Austria

Belarus

Belgium

Bulgaria

Canada

Croatia

Czech Republic

Denmark

Estonia

Finland

France

Germany

Hungary

Ireland

Israel

Italy

Kosovo

Luxembourg

Moldova

Netherlands

Norway

Philippines

Poland

Russia

Romania

Serbia

Slovakia

Spain

Switzerland

Turkey

Ukraine

United Kingdom

United States of America

New York

Oregon

Wisconsin

Proposals

Trafficzone

Default speeds

Implicit maxspeeds set by "trafficzone" and "highway"

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