A1 Hillsborough Bypass: Collision History & Road Safety
A detailed historical investigation using official PSNI injury collision records and mapped DfI road sections, 2013–2025.
Important: these collisions were recorded within 100 metres of the mapped road corridor. They are not all confirmed to have occurred on the named road itself.
Interactive A1 Hillsborough Bypass collision map
Explore police-recorded injury collisions near A1 Hillsborough Bypass sections. Select a collision marker to inspect its historical record.
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| Year | Severity | Distance | Record |
|---|
A1 Hillsborough Bypass collision history, 2013–2025
The annual figures show police-recorded injury collisions within 100 metres of mapped road sections. They are not adjusted for traffic volumes or changes in road use.
| Year | Recorded collisions |
|---|---|
| 2013 | 26 |
| 2014 | 27 |
| 2015 | 25 |
| 2016 | 30 |
| 2017 | 22 |
| 2018 | 32 |
| 2019 | 35 |
| 2020 | 19 |
| 2021 | 14 |
| 2022 | 23 |
| 2023 | 19 |
| 2024 | 28 |
| 2025 | 22 |
Collision severity, casualties and vehicles
People killed and injured
These are individual casualty records associated with the mapped injury collisions in this investigation, from 2013 to 2025.
These figures count people, not collisions. They cover police-recorded incidents within 100 metres of the mapped road sections—not necessarily every collision on the named road. The dates and geographical coverage may differ from published whole-road death tolls.
A fatal collision is a collision classified as fatal; it is not a count of people who died. Casualty and vehicle totals count linked records rather than separate collisions.
Speed cameras and police enforcement
No road-specific enforcement deployment or speed-camera effectiveness figures have been attributed to this road without separately verified evidence.
Explore the Northern Ireland speed camera directory for documented camera locations and enforcement information.
Sources and methodology
Collision, casualty and vehicle records are taken from historical PSNI injury-collision datasets. Road alignment comes from DfI road-network geometry.
The road investigation includes 15 mapped sections and uses a 100-metre geographic proximity calculation. Nearby junctions, slip roads and adjoining streets may contribute records. The figures do not independently establish collision causes or individual responsibility.
Source portal: Open Data Northern Ireland.
Explore more Northern Ireland road investigations
Historical collision comparisons
This investigation compares police-recorded injury collisions from 2013 to 2018 with 2019 to 2024. The latest complete year is shown separately. These counts are not adjusted for traffic volume.
Three-year rolling collision averages
| Ending year | Average per year |
|---|---|
| 2015 | 26.00 |
| 2016 | 27.33 |
| 2017 | 25.67 |
| 2018 | 28.00 |
| 2019 | 29.67 |
| 2020 | 28.67 |
| 2021 | 22.67 |
| 2022 | 18.67 |
| 2023 | 18.67 |
| 2024 | 23.33 |
| 2025 | 23.00 |
Year-to-year changes may reflect traffic levels, roadworks, road layout, reporting patterns and other factors. The records alone do not establish causes.
Explore original PSNI collision records
Open the historical injury collision records used in this road-corridor investigation.
What this road investigation can establish
PureCar matches historic PSNI injury collisions to mapped DfI road geometry using a 100-metre radius. Nearby junctions, adjoining roads and slip roads may also fall within that corridor.
Fatal and serious classifications count collisions, not deaths or numbers of people injured. Linked casualties and vehicles are counted separately.
Road-specific police enforcement figures are only reported when independently verified. Where no verified figures exist, no enforcement totals or claims about camera effectiveness are inferred.
What the police collision records tell us
These findings are calculated from the historical PSNI records associated with this mapped road corridor.
The mapped corridor contains 322 distinct police-recorded injury collisions from 2013 to 2025. These are incidents within 100 metres of mapped road sections, not necessarily incidents on the named road.
2019–2024 recorded 138 nearby collisions, compared with 162 in 2013–2018: a decrease of 14.8%.
The highest annual count was 35 in 2019. The lowest was 14 in 2021. In 2025, the count was 22.
Of the 322 injury collisions, 2 were classified fatal, 34 serious and 286 slight. These describe collision severity rather than the number of people killed.
The investigation links 489 casualty records and 639 vehicle records. Multiple people or vehicles may be associated with a single collision.
What do we know about speed enforcement here?
For this mapped investigation, road-specific police speed-van deployment totals, detection figures and enforcement outcomes have not been independently verified in the underlying research dataset.
That does not establish that enforcement did or did not take place. It means no numerical deployment or camera-effectiveness claim can responsibly be made for this location.
Explore documented Northern Ireland speed camera locations →
Is this road becoming safer?
The comparison between 2013–2018 and 2019–2024 describes changes in the number of recorded injury collisions near mapped road sections.
It is not a traffic-adjusted risk measure. Traffic volumes, road design, reporting practices, traffic management and other factors may affect the comparison.
These historical records alone cannot establish why collision numbers changed, whether an individual driver was responsible or whether speed enforcement caused a reduction in collisions.