A PDF map that shows the counties and unitary authorities in the United Kingdom as at 1 April 2023. (File Size - 583 KB)

This dataset is refreshed on a weekly basis from the datasets the team works on daily.Last update date: 31 July 2025.National Highways Operational Highway Boundary (RedLine) maps out the land belonging to the highway for the whole Strategic Road Network (SRN). It comprises two layers; one being the an outline and another showing the registration status / category of land of land that makes up the boundary. Due to the process involved in creating junctions with local highway authority (LHA) roads, land in this dataset may represent LHA highway (owned by National Highways but the responsibility of the LHA to maintain). Surplus land or land held for future projects does not form part of this dataset.The highway boundary is derived from:Ordnance Survey Mastermap Topography,HM Land Registry National Polygon Service (National Highway titles only), andplots researched and digitised during the course of the RedLine Boundary Project.The boundary is split into categories describing the decisions made for particular plots of land. These categories are as follows:Auto-RedLine category is for plots created from an automated process using Ordnance Survey MasterMap Topography as a base. Land is not registered under National Highways' name. For example, but not limited to, unregistered ‘ancient’ highway vested in Highways England, or bridge carrying highways over a rail line.NH Title within RedLine category is for plots created from Land Registry Cadastral parcels whose proprietor is National Highways or a predecessor. Land in this category is within the highway boundary (audited) or meets a certain threshold by the algorithm.NH Title outside RedLine category is for plots created in the same way as above but these areas are thought to be outside the highway boundary. Where the Confidence is Low, land in this category is yet to be audited. Where the Confidence is High, land in this category has been reviewed and audited as outside our operational boundary.National Highways (Technician) Data category is for plots created by National Highways, digitised land parcels relating to highway land that is not registered, not yet registered or un-registerable.Road in Tunnel category, created using tunnel outlines from Ordnance Survey MasterMap Topography data. These represent tunnels on Highways England’s network. Land is not registered under National Highways' name, but land above the tunnel may be in National Highways’ title. Please refer to the definitive land ownership records held at HM Land Registry.The process attribute details how the decision was made for the particular plot of land. These are as follows:Automated category denotes data produced by an automated process. These areas are yet to be audited by the company.Audited category denotes data that has been audited by the company.Technician Data (Awaiting Audit) category denotes data that was created by National Highways but is yet to be audited and confirmed as final.The confidence attribute details how confident you can be in the decision. This attribute is derived from both the decisions made during the building of the underlying automated dataset as well as whether the section has been researched and/or audited by National Highways staff. These are as follows:High category denotes land that has a high probability of being within the RedLine boundary. These areas typically are audited or are features that are close to or on the highway.Moderate category denotes land that is likely to be within the highway boundary but is subject to change once the area has been audited.Low category denotes land that is less likely to be within the highway boundary. These plots typically represent Highways England registered land that the automated process has marked as outside the highway boundary.Please note that this dataset is indicative only. For queries about this dataset please contact the GIS and Research Team.

The statistics refer to the volume of road traffic in Wales. Road traffic estimates for Wales are compiled by the Department for Transport on behalf of the Welsh Government. These estimates are based on annual roadside manual road traffic counts carried out across Wales during the year. These roadside counts are combined with automatic traffic count (ATC) data and road lengths to produce overall traffic estimates. Traffic estimates for major roads are based on a census of all such roads whereas traffic estimates for minor roads are estimated by calculating growth rates from a fixed sample of count points on the minor road network. Further details of the methodology are available from the DfT at the link below: https://www.gov.uk/government/publications/road-traffic-speeds-and-congestion-statistics-guidance . All surfaced roads (excluding Trunk Roads) are included in the estimates. The categories are: Major roads: Motorways. Dual carriageways designed for fast traffic with access limited to motor vehicles, and with relatively few places for joining or leaving. The only motorway in Wales is the M4. A County roads. All other A roads. Estimates for A roads are also available with sub-categories for urban and rural roads on StatsWales. Urban roads are those within the boundaries of settlements with a population of 10,000 or more, and rural roads are all other non-motorway major roads. Minor roads: B roads. Roads intended to connect different areas, and to feed traffic between A roads and smaller roads on the network. Classified unnumbered. Smaller roads intended to connect together unclassified roads with A and B roads, and often linking a housing estate or a village to the rest of the network. Similar to ‘minor roads’ on an Ordnance Survey map and sometimes known unofficially as C roads. Unclassified. Local roads intended for local traffic. The vast majority of roads fall within this category. The analysis by vehicle type is based on roadside observation where vehicles are classified according to their general appearance. The vehicle types identified are: 1) Pedal cycles: Includes all non-motorised cycles, 2) Motorcycles: Two-wheeled motor vehicles, including mopeds, motor scooters and motorcycle combinations, 3) Cars and taxis: Includes estate cars, all light vans with windows to the rear of the driver's seat, passenger vehicles with 9 seats or fewer, three-wheeled cars, motorised-invalid carriages, Land Rovers, Range Rovers and Jeeps. Cars towing caravans or trailers are counted as one vehicle, 4) Buses and coaches: Includes all public service vehicles and works buses other than vehicles with less than 10 seats, 5) Light vans: All goods vehicles up to 3,500kg gross vehicle weight. This includes all car-based vans and those of the next larger carrying-capacity, such as transit vans. Also included are ambulances, pick-ups, milk floats and pedestrian-controlled motor vehicles. Most of this group are delivery vans of one type or another, 6) Goods vehicles: All goods vehicles over 3,500kg gross vehicle weight. Includes tractors (without trailers), road-rollers, box vans and similar large vans. A two-axle motor tractor unit without trailer is also included, 7) All motor vehicles: All vehicles except pedal cycles. Traffic volume is measured using Vehicle Kilometres (VKM), which are calculated by multiplying the annual average daily flow of traffic by the corresponding length of road. For example, 1 vehicle travelling 1 kilometre a day for a year would be 365 VKM over a year. In this release estimates are presented as billion vehicle kilometres (bvk).

These layers digitally represent diversion routes used to manage traffic in response to road closures required across England's Strategic Road Network unplanned events.As part of National Highways' commitment to sharing data, the diversion routes data provides information to help ensure road users are better informed, particularly freight customers, which is why we are communicating the suitability of diversion routes for different vehicles as per customer service standards GG 903 - Customer service standard for diversion routes for unplanned events and GG 907 - Customer service standard for diversion routes for planned works and activities.The dataset consists of the following:Diversion Route: Contains all the diversion routes, and their applicability for different vehicles and link to the closed stretch of the Strategic Road Network that would trigger the diversion route to be implementedSRN Closed Stretch: Contains information about sections of the Strategic Road Network that when closed will lead to a diversion being implementedDiversion Point: Contains all the restrictions along the diversion route, such as height and width restrictions due to low bridges or narrow lanesTo ensure this information remain accurate, the dataset pulls from layers linked to those maintained by National Highways Resilience Planners.For any issues/queries related to the data, please contact: digitallaboperations@nationalhighways.co.ukFor all other issues/queries please contact: GIS@nationalhighways.co.ukThe data is published under an Open Government Licence.

The statistics refer to the volume of road traffic in Wales. Road traffic estimates for Wales are compiled by the Department for Transport on behalf of the Welsh Government. These estimates are based on annual roadside manual road traffic counts carried out across Wales during the year. These roadside counts are combined with automatic traffic count (ATC) data and road lengths to produce overall traffic estimates. Traffic estimates for major roads are based on a census of all such roads whereas traffic estimates for minor roads are estimated by calculating growth rates from a fixed sample of count points on the minor road network. Further details of the methodology are available from the DfT at the link below: https://www.gov.uk/government/publications/road-traffic-speeds-and-congestion-statistics-guidance . All surfaced roads are included in the estimates. The categories are: Major roads: Motorways. Dual carriageways designed for fast traffic with access limited to motor vehicles, and with relatively few places for joining or leaving. The only motorway in Wales is the M4. A Trunk roads. Part of the strategic road network owned by and operated on behalf of Government A County roads. All other A roads. Estimates for A roads are also available with sub-categories for urban and rural roads on StatsWales. Urban roads are those within the boundaries of settlements with a population of 10,000 or more, and rural roads are all other non-motorway major roads. Minor roads: B roads. Roads intended to connect different areas, and to feed traffic between A roads and smaller roads on the network. Classified unnumbered. Smaller roads intended to connect together unclassified roads with A and B roads, and often linking a housing estate or a village to the rest of the network. Similar to ‘minor roads’ on an Ordnance Survey map and sometimes known unofficially as C roads. Unclassified. Local roads intended for local traffic. The vast majority of roads fall within this category. Traffic volume is measured using Vehicle Kilometres (VKM), which are calculated by multiplying the annual average daily flow of traffic by the corresponding length of road. For example, 1 vehicle travelling 1 kilometre a day for a year would be 365 VKM over a year. In this release estimates are presented as billion vehicle kilometres (bvk).

1st July 2016 Update

WebTRIS Phase 1 is now available and can be accessed at http://webtris.highwaysengland.co.uk

We are in the process of updating the way that traffic flow data is made available to our external users to replace the old TRADS website. The new platform will deliver a more modern experience, utilising Google Maps with count site overlays and bespoke downloadable reporting capabilities. This new service will be referred to as ‘WebTRIS’.

The new development will contain all of the elements users are already familiar with; searching on Site ID’s and reviewing reports based on Site ID’s etc. but will also modernise the look and feel of the product and allow users to select an area of interest by clicking on a map.

Development began in early February 2016 and is expected to be complete in July 2016.

This is a Phase 1 release. A Phase 2 development is planned to take into account user feedback.

On-going updates will be released here with videos showing the product as it grows. There will also be live demonstrations as the product nears go-live and opportunities to take part in User Acceptance Testing and feedback sessions.

We are working hard to improve the level of service that we provide and thank you for your patience while we do so. We will keep you informed on progress with the next update due in May.

This data series provides average journey time, speed and traffic flow information for 15-minute periods since April 2015 on all motorways and 'A' roads managed by Highways England, known as the Strategic Road Network, in England.

Journey times and speeds are estimated using a combination of sources, including Automatic Number Plate Recognition (ANPR) cameras, in-vehicle Global Positioning Systems (GPS) and inductive loops built into the road surface.

Please note that journey times are derived from real vehicle observations and imputed using adjacent time periods or the same time period on different days. Further information is available in 'Field Descriptions' at the bottom of this page.

This data replaces the data previously made available via the Hatris and Trads websites.

Please note that Traffic Flow and Journey Time data prior to April 2015 is still available on the HA Traffic Information (HATRIS) website which can be found at https://www.hatris.co.uk/

The Network Model digitally represents England’s Strategic Road Network. The model contains critical information about our road’s location, names, lanes and widths.The Network Model was derived from Ordnance Survey (OS) Highways data and enriched with internal datasets. It reflects National Highways roads that are open for traffic and have been validated against our Operational Highway Boundary (RedLine).To ensure the model remains accurate, we have implemented processes to track changes across the network. However, if you have noticed any inaccuracies in the data, please report it here. This form is to be used to report data issues only.In this initial release, speed limit and smart motorway information has been removed pending data validation.To download a file geodatabase containing all layers of the network model and their relationships please use this link.For more information about the Network Model please visit our landing page and technical hub.For maintenance issues on the network please report here. For non-emergency incidents please contact our Customer Contact Centre on 0300 123 5000.The data is published under an Open Government Licence.

Road works, both in progress and planned, in Lancashire.

By our definition, any journey that travels slower than the speed limit, experiences delay. To put this into context, if you experience 10 seconds of average delay per mile, then to travel one mile on a motorway will take 61 seconds instead of the 51 seconds it would take driving at 70mph.Our average speed information provided is that observed during the specific year on a specific road link.Our journey time reliability metric describes the amount of non-recurrent, or unexpected, delay on a link. Unexpected delay is the difference between the observed travel time and the typical travel time on this section of road. For example, of the 10 seconds of average delay per mile in the previous example, 5 seconds of this could be unexpected delay and therefore contributes to our reliability performance indicator. The other 5 seconds would be delay that is typically experienced due to regular traffic conditions or the physical features of the road. Our Total Delay metric adds up all the delay experienced on a road link during that year, across all vehicles, so shows the links which experience the most cumulative delay. This could show a highly-trafficked road as experiencing more total delay than a lower trafficked road, even if the average delay per vehicle might be higher on the road with less vehicles. Because some links are longer than others, this metric is normalised based on the size of the link and the number of days of data.The AM peak is defined as between the hours of 7:00 am and 10:00 am. The Interpeak is defined as between the hours of 10:00am and 4:00 pm. The PM peak is defined as being between the hours of 4:00 pm and 7:00 pm. The Overnight period is defined as being between the hours of 8:00 pm and 7:00 am.

1. juli 2016 Opdatering WebTRIS Fase 1 er nu tilgængelig og kan tilgås på http://webtris.highwaysengland.co.uk Vi er i færd med at opdatere den måde, hvorpå trafikstrømsdata stilles til rådighed for vores eksterne brugere til erstatning for det gamle TRADS-websted. Den nye platform vil levere en mere moderne oplevelse ved hjælp af Google Maps med overlejringer af tællewebsteder og skræddersyede rapporteringsfunktioner, der kan downloades. Denne nye tjeneste benævnes "WebTRIS".

Den nye udvikling vil indeholde alle de elementer, som brugerne allerede er bekendt med.søgning på websteds-ID'er og gennemgang af rapporter baseret på websteds-ID'er osv., men vil også modernisere produktets udseende og give brugerne mulighed for at vælge et interesseområde ved at klikke på et kort.

Udviklingen begyndte i begyndelsen af februar 2016 og forventes at være afsluttet i juli 2016.

Der er tale om en fase 1-frigivelse.Der er planlagt en fase 2-udvikling for at tage hensyn til brugerfeedback.

Løbende opdateringer vil blive udgivet her med videoer, der viser produktet, når det vokser.Der vil også være live demonstrationer som produktet nærmer go-live og muligheder for at deltage i User Acceptance Testing og feedback sessioner.

Vi arbejder hårdt på at forbedre det serviceniveau, vi leverer, og tak for din tålmodighed, mens vi gør det. Vi vil holde dig orienteret om fremskridtene med den næste opdatering, der skal foretages i maj.

Denne dataserie giver oplysninger om gennemsnitlig rejsetid, hastighed og trafikstrøm i 15 minutters perioder siden april 2015 på alle motorveje og A-veje, der forvaltes af Highways England, kendt som Strategic Road Network, i England.

Køretider og hastigheder estimeres ved hjælp af en kombination af kilder, herunder kameraer til automatisk nummerpladegenkendelse (ANPR), indbyggede Global Positioning Systems (GPS) og induktive sløjfer indbygget i vejoverfladen.

Bemærk, at rejsetider er afledt af reelle køretøjsobservationer og imputeret ved hjælp af tilstødende tidsperioder eller den samme tidsperiode på forskellige dage.Yderligere oplysninger findes under 'Feltbeskrivelser' nederst på denne side. Disse data erstatter de data, der tidligere blev stillet til rådighed via Hatris and Trads-webstederne.

Bemærk venligst, at trafikflow- og rejsetidsdata før april 2015 stadig er tilgængelige på HA Traffic Information (HATRIS)-webstedet, som kan findes på https://www.hatris.co.uk/
WebTRIS Fase 1 er nu tilgængelig og kan tilgås på http://webtris.highwaysengland.co.uk Vi er i færd med at opdatere den måde, hvorpå trafikstrømsdata stilles til rådighed for vores eksterne brugere til erstatning for det gamle TRADS-websted.Den nye platform vil levere en mere moderne oplevelse ved hjælp af Google Maps med overlejringer af tællewebsteder og skræddersyede rapporteringsfunktioner, der kan downloades. Denne nye tjeneste benævnes "WebTRIS".

Den nye udvikling vil indeholde alle de elementer, som brugerne allerede er bekendt med.søgning på websteds-ID'er og gennemgang af rapporter baseret på websteds-ID'er osv., men vil også modernisere produktets udseende og give brugerne mulighed for at vælge et interesseområde ved at klikke på et kort.

Udviklingen begyndte i begyndelsen af februar 2016 og forventes at være afsluttet i juli 2016. Der er tale om en fase 1-frigivelse. Der er planlagt en fase 2-udvikling for at tage hensyn til brugerfeedback. Løbende opdateringer vil blive udgivet her med videoer, der viser produktet, når det vokser. Der vil også være live demonstrationer som produktet nærmer go-live og muligheder for at deltage i User Acceptance Testing og feedback sessioner.

Vi arbejder hårdt på at forbedre det serviceniveau, vi leverer, og tak for din tålmodighed, mens vi gør det. Vi vil holde dig orienteret om fremskridtene med den næste opdatering, der skal foretages i maj.

Denne dataserie giver oplysninger om gennemsnitlig rejsetid, hastighed og trafikstrøm i 15 minutters perioder siden april 2015 på alle motorveje og A-veje, der forvaltes af Highways England, kendt som Strategic Road Network, i England.

Køretider og hastigheder estimeres ved hjælp af en kombination af kilder, herunder kameraer til automatisk nummerpladegenkendelse (ANPR), indbyggede Global Positioning Systems (GPS) og induktive sløjfer indbygget i vejoverfladen.

Bemærk, at rejsetider er afledt af reelle køretøjsobservationer og imputeret ved hjælp af tilstødende tidsperioder eller den samme tidsperiode på forskellige dage. Yderligere oplysninger findes under 'Feltbeskrivelser' nederst på denne side.

Disse data erstatter de data, der tidligere blev stillet til rådighed via Hatris and Trads-webstederne.

Bemærk venligst, at trafikflow- og rejsetidsdata før april 2015 stadig er tilgængelige på HA Traffic Information (HATRIS)-webstedet, som kan findes på https://www.hatris.co.uk/