OS MasterMap Highways Network with Average Speed is supplied as a zipped file comprising a national set. The zipped file will contain one CSV file which will contain all records. The CSV file contains headers.

• File size will be approximately 180 MB zipped.

• The data is not encrypted.

OS MasterMap Highways Network with Speed Limits is supplied as a zipped file comprising a national set. The zipped file will contain one shapefile which will contain all records.

• File size will be approximately 370 MB zipped.

• The data is not encrypted.

OS MasterMap Highways Network with Average Speed data and OS MasterMap Highways Network with Speed Limits data is supplied as download only.

Both speed products are available for partners only and can be ordered from the OS Data Hub. You can also download OS MasterMap Highways Network Routing and Asset Management Information from the OS Data Hub.

OS MasterMap Highways Network with Average Speed is available in CSV file format only. The CSV file will be supplied with headers and information detailed in the attributes described in the OS MasterMap Highways Network with Average Speed page. The data is provided zipped as single file(.zip). Data is provided as full supply only and is refreshed annually (in May).

OS MasterMap Highways Network with Speed Limits is available in shapefile format only. The data is provided zipped as single file(.zip). Data is provided as full supply only and is refreshed quarterly (in April, July, October and January).

OS MasterMap Highways Network with Average Speed is supplied within a zip file with the following name: hnavsp_csv_gb.zip.

Within the zip file, you will find the CSV file containing all records, which will have the following name: Highways_AverageSpeed_GB.csv.

OS MasterMap Highways Network with Speed Limits is supplied within a zip file with the following name: hnavsp_csv_gb.zip.

Within the zip file, you will find the shapefile containing all records, which will have the following named file extensions:

• Highways_SpeedLimits_GB.shp

• Highways_SpeedLimits_GB.prj

• Highways_SpeedLimits_GB.qpj

• Highways_SpeedLimits_GB.dbf

• Highways_SpeedLimits_GB.shx

Average Speed attributes

Historical Average Speed on a highway.

RoadLinkId

Unique identifier, for OS MasterMap Road Link feature, this is a TOID.

• Type: nvarchar

• Size: 50

• Multiplicity: [1]

Code

The Road Feature code (e.g. 3000 Motorway).

• Type: Integer

• Multiplicity: [1]

Length

The OS RoadLink length in metres.

• Type: Float

• Multiplicity: [1]

The OS MasterMap Highways Network with Average Speed product identifies the average speed travelled across all roads in Great Britain at different times of day. The average speed is calculated based on detailed historical speed information, which is collected annually by in-vehicle telematics devices and mapped to each unique OS MasterMap RoadLink TOID. The average speed value is provided in both directions. The average speed is provided in km/h and for each road link.

The average speed product provides a detailed breakdown of the speed travelled at different times of day. The times of day available are as follows:

• 07:00 – 09:00 Monday – Friday (Peak AM)

• 10:00 – 16:00 Monday – Friday (Off Peak)

• 16:00 – 19:00 Monday – Friday (Peak PM)

• 19:00 – 23:00 every day (Evening)

• 00:00 – 04:00 every day (Night-time)

• Weekend

The context diagram below shows the feature attribution of Average Speed data and the relationship to the OS MasterMap Highways Network RoadLink feature. This is a one-to-one relationship and is realised through the “RoadLinkId” attribute in the Average Speed file.

The OS MasterMap Highways Network with Average Speed product contains detailed average speed information which is calculated using over 135 000 vehicles with inbuilt trackers and GPS loggers and mixed-use vehicle fleet telematic data. The main type of vehicle is cars, but LGVs and HGVs are also used

to calculate the average speed. The data is polled every 1 to 10 seconds and then attached to the Ordnance Survey road network.

The data is then analysed and checked against current and previous polls to ensure the data is captured against the correct OS MasterMap Road Link feature. The average speed data is provided with bi-directionality, meaning two speed values are provided on single-carriageway roads. These speeds are named in the product data as an “A” speed and a “B” speed in km/h. The speed will be given on the road link for the direction of travel. The A side represents the direction from node A to B and is in the direction of digitisation of the road link while the B side is from node B to A and is against the direction of digitisation.

When a link is one-way the speed will always be provided only in the A column attributes.

Within any given month of data collection, there will be 99% coverage of average speed information for Motorways, A Roads and B roads and over 50% coverage of C class roads. For road links or time periods where there is no speed data available over the 12 months, these road links are infilled using neighbouring link information to ensure 100% coverage of data. This data is released annually and built against one version of the Ordnance Survey network; therefore, the complete link matching is for this version only.

This section describes how the speed data elements of the OS MasterMap Highways Network portfolio are supplied.

The additional OS MasterMap Highways Network speed products are being made available to Partners only and will be available to download from the OS Data Hub. However, due to different release schedules between the OS MasterMap Highways Network Routing and Asset Management Information product and the speed products, they will be available in OS Data Hub as separate data sets.

The speed products will be available as national coverage only. Partners can make areas of interest (AOIs) available to their customers.

Public Sector customers can commercially license speed products through OS’s Partner channel.

The OS MasterMap Highways Network family has been enhanced with the addition of three new products:

• OS Master Highways Network with Routing and Asset Management Information and Average Speed

• OS Master Highways Network with Routing and Asset Management Information and Speed Limits

• OS Master Highways Network with Routing and Asset Management Information and Average Speed and Speed Limits

These three new products are supplied with an additional data file which will be either Average Speed, Speed Limits or a combination of both. This Technical Specification will cover the elements which make up the Average Speed and Speed Limits data files. Please see the OS MasterMap Highways Network – Routing and Asset Management Information (RAMI) Technical Specification for more information about this product.

OS MasterMap Highways Network with Average Speed contains detailed historical speed information which provides the average speed travelled for all roads in Great Britain. This dataset is based on a year’s worth of information collected by in-vehicle telematics devices that capture data for all roads.

OS MasterMap Highways Network with Speed Limits identifies the speed limit for a stretch of road based on road traffic signs. This dataset is sourced from local authorities, police forces and many other reliable sources to ensure a high level of accuracy. The data is continuously updated through a system of user feedback.

Both Average Speed and Speed Limits data are linked to the corresponding OS MasterMap Highways Network Road Link feature to which it belongs, identified by the Road Link TOID.

These speed datasets will be made available along with the OS MasterMap Highways Network – Routing and Asset Management Information (RAMI) product licence.

Available formats

OS MasterMap Highways Network with Average Speed dataset will be supplied as a Comma-Separated Value (.CSV) file.

OS MasterMap Highways Network with Speed Limits dataset will be supplied as a shapefile (.shp), for which the source projection is OSGB 1936 / ESPG 27700, British National Grid.

Index

This technical specification includes the following sections:

• Product supply

• OS MasterMap Highways Network with Average Speed

• OS MasterMap Highways Network with Speed Limits

Average Speed data is supplied as a Comma-Separated Values (CSV) file with headers included and will appear in the following format:

The average speed information is provided in both directions of a road link, named A and B in the attributes. The Direction attribute informs you if the speed information applies to both directions of a road link or if it applies to one-way road links. When the speed is provided only within an “A” attribute means the speed applies to one-way road links and the direction values indicates if the speed applies in the direction or against the direction of digitisation. The table below describes the codes which will be used to populate this field and the description for each code.

Code List: ChangeValue

This section describes the features which make up OS MasterMap Highways Network with average speed. The attributes associated with these feature types are listed below along with a brief description of their data properties.

The OS MasterMap Highways Network with Speed Limits product provides information on the signed speed limit of a road. Speed Limits are collected from various sources such as local authorities, telematics, accident reports, police forces and trusted users. The product provides a single speed limit value for each OS MasterMap RoadLink feature.

The speed limit is provided in miles per hour (mph). Road Link features within the OS MasterMap Highways Network do not break for a change in speed limit. Therefore, the speed limit provided is the speed which predominantly covers the road link. Speed Limits has full national coverage and accuracy is aimed to be at 98% by road length at the time of publishing.

The context diagram shows the feature attribution of Speed Limits data and the relationship to the OS MasterMap Highways Road Link feature. This is a one-to-one relationship and is realised through the “Os_link_id” attribute in the SpeedLimits feature.

A code list or enumeration is a controlled set of values which can be used to populate a specific column.

This section describes the features which make up OS MasterMap Highways Network with speed limits. The attributes associated with these feature types are listed below along with a brief description of their data properties.

Speed limits are supplied in Esri shapefile (.shp) and an example record (instance) will appear in the following format:

The OS MasterMap Highways Network with Speed Limits product contains detailed speed limit information based upon traffic signage. Many other speed datasets are built by sending vehicles around the UK; however, this product captures speed limit information and validates it more frequently through the following sources:

• Accident information

• Telematics data

• FOI requests

• Road layout logic

• Local Authorities

• An online visual tool that is used to manage the updates which is accessed by numerous trusted users

SpeedLimits attributes

The Speed Limit on a highway.

Os_link_id

Unique identifier, for OS MasterMap Road Link feature, this is a TOID.

• Type: CharacterString

• Multiplicity: [1]

Speed

This is the speed limit value per road link.

• Type: Double

• Multiplicity: [1]

Geometry

The geometry that represents the centreline of the road link.

• Type: Polyline ZM

• Multiplicity: [1]

The direction to which the average speed applies to. If this is populated with 0 the average speed applies to both directions (A and B) of a road link and if it is 1 (A>B direction, in direction of digitisation) or -1 (B>A Direction, against direction of digitisation) the average speed applies to one-way road links. When the road link is one-way the speed will always be provided in the A column attributes and the Direction value 1 or -1 will show if the average speed applies in or against direction of digitisation of the road link.

DirectionValue attributes

• Multiplicity: [1]

PeakAM0709MonFriA

This is the average speed for Monday – Friday for 07:00 until 09:00 and is in direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [1]

PeakAM0709MonFriB

This is the average speed for Monday – Friday for 07:00 until 09:00 and is against direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [0..1]

PeakPM1619MonFriA

This is the average speed for Monday – Friday for 16:00 until 19:00 and is in direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [1]

PeakPM1619MonFriB

This is the average speed for Monday – Friday for 16:00 until 19:00 and is against direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [0..1]

OffPeak1016MonFriA

This is the average speed for Monday – Friday for 10:00 until 16:00 and is in direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [1]

OffPeak1016MonFriB

This is the average speed for Monday – Friday for 10:00 until 16:00 and is against direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [0..1]

EveningSpeed1923EveryDayA

This is the average speed for Monday – Sunday for 19:00 until 23:00 and is in direction of digitisation of the road link.

• Type: Decimal

• Size: 120

• Multiplicity: [1]

EveningSpeed1923EveryDayB

This is the average speed for Monday – Sunday for 19:00 until 23:00 and is against direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [0..1]

NightTime0004EveryDayA

This is the average speed for Monday – Sunday for 00:00 until 04:00 and is in direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [1]

NightTime0004EveryDayB

This is the average speed for Monday – Sunday for 00:00 until 04:00 and is against direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [0..1]

Weekend0719A

This is the average speed for Saturday – Sunday for 07:00 until 19:00 and is in direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [1]

Weekend0719B

This is the average speed for Monday – Sunday for 07:00 until 19:00 and is against direction of digitisation of the road link.

• Type: Decimal

• Size: (10, 2)

• Multiplicity: [0..1]