Northern Ireland's 5,015 Injury Collisions: Why 'Most Dangerous Road' Rankings Need Better Evidence
Police recorded 5,015 injury collisions in Northern Ireland during 2025, but deciding which stretches of road pose the greatest risk requires more than counting crashes.
Northern Ireland recorded 5,015 injury road traffic collisions in 2025. Those incidents resulted in 56 deaths, 1,066 serious injuries and 6,757 slight injuries, according to the Police Service of Northern Ireland. Behind those national totals are thousands of individual events distributed across town centres, country roads, main routes and residential streets. The difficult question is not simply where crashes happened; it is where the risk to a driver, pedestrian, cyclist or passenger is greatest.
The PSNI has released collision-level data for 2025, along with linked casualty and vehicle files and a data guide. That makes it possible for researchers and publishers to examine patterns in locations, road conditions, casualty severity and vehicles involved. It does not mean that selecting the road with the largest number of recorded incidents produces an accurate list of the most dangerous roads.
A heavily used road might see more injury collisions because vastly more vehicles travel along it. A lightly trafficked route could have fewer collisions overall but a much higher risk for each journey. Some roads are also longer than others. Meaningful comparison should consider traffic volumes, road length, junction layout, collision severity and several years of data rather than relying on a one-year tally.
That distinction matters particularly in Northern Ireland. The road network includes high-capacity motorways, busy urban corridors and rural roads with narrow carriageways, bends, variable lighting and complex junctions. The Department for Infrastructure publishes traffic census material, which can help contextualise numbers of collisions against vehicle movements. Combining those datasets carefully is far more useful than attaching a sensational label to a familiar road name.
There is also a limitation in the police collision figures: they cover injury collisions reported and recorded by police. A damage-only incident, however costly for a driver, is not included. Nor can a recorded collision establish that a road's physical condition was the sole cause. The police record principal causation factors, but infrastructure, vehicle condition, weather and driver behaviour can interact in ways that a simple ranking will not capture.
The most common principal causation factors associated with people killed or seriously injured during 2025 included inattention or diverted attention (115 casualties), wrong course or position (95), and excessive speed having regard to conditions (86). These are casualty counts attributed to principal factors, not a complete explanation of every crash.
For drivers, the immediate implication is practical: familiar roads deserve the same attention as unfamiliar ones. High traffic volumes, junction decisions, distractions and speed inappropriate to conditions all matter. For public policy, the more valuable question is which locations have repeated serious incidents and what preventable patterns connect them.
What the published number can — and cannot — tell you
The national figure of 5,015 recorded injury collisions in 2025 is a total for all Northern Ireland, not a road-by-road ranking. The open PSNI files enable local analysis, but a ranking needs a transparent method. An injury collision, an injured person and a fatality are three different units. One collision may produce several casualties. PureCar therefore does not present a fabricated 'top ten worst roads'. A useful public map should display the actual incident count, severity, period and definition, and flag when a road's traffic denominator is missing.
For drivers: when checking a route, the most actionable questions are whether a junction has complicated turning movements, whether sight lines are clear and whether weather or lighting affects the approach. A map of historical injury crashes is background evidence; it cannot replace current road signs or real-time conditions.
What a truly useful road-risk map would actually show
The first column should be number of collisions causing death or serious injury, not simply total recorded accidents. A road with ten low-severity incidents is a different problem from a road with three serious collisions. The second column should be the number of people affected: a single collision can injure several occupants, so casualties and collisions are not interchangeable. The third should be the years covered. One unusually bad year is an unstable basis for declaring a location a persistent blackspot.
Location precision is the next challenge. A collision registered on a named route may be close to a junction, slip road or boundary; mapping the data without checking coordinates and how records were geocoded can falsely assign blame to the wrong section. Nor should a map place a fatal-collision marker on the doorstep of a family involved in a recent tragedy without considering privacy and proportionality.
For a fairer comparison, researchers could calculate serious collisions per vehicle-kilometre, using appropriate DfI traffic data. That denominator is not available at identical precision for every small road, so a traffic-adjusted ranking should acknowledge gaps instead of manufacturing a precise risk score. Crossings and junctions used by pedestrians may require another measure altogether, such as observed pedestrian movements.
The NI locations worth inspecting first — without pretending they top a ranking
The M1, M2 and A12 Westlink are conspicuous because of the volume of movements they carry; central Belfast junctions deserve scrutiny because of the mixture of motorists, pedestrians, deliveries and buses; and higher-speed rural routes deserve attention because the majority of deaths occur on roads classified as rural. These are logical research categories, not findings that any named location was the worst in 2025.
Readers should be able to click a location and see: the underlying number of recorded injury collisions; how many were fatal or serious; the exact reporting period; known caveats; and the source data. A ranked graphic with none of that is entertainment masquerading as road-safety information.
The number drivers should demand before believing a 'blackspot' headline
Consider two hypothetical stretches of road. Stretch A has six serious collisions over five years, and Stretch B has three. If A carries twenty times as many vehicles as B, treating A as twice as dangerous is statistically indefensible. The six and three are illustrative only; they are not figures for any Northern Ireland road. The comparison shows why a report needs a rate as well as a count.
A rigorous hotspot table would also guard against *regression to the mean*: a particularly bad year at a location may be followed by a quieter year even without any change in infrastructure. Multi-year windows and comparison sites matter when assessing whether a safety intervention worked. Moreover, a cluster of incidents in a small geographical area is not necessarily attributable to one junction unless the individual records support that assignment.
How to investigate a specific junction before you travel
If a junction concerns you, identify it precisely using the joining road names and direction of approach, then consult the PSNI collision records and DfI road information. Look for repeating manoeuvres rather than assuming every injury collision involved the same problem. An accident count won't tell you whether there is a sight-line issue, a confusing priority arrangement or inappropriate driver speed; those are separate questions to put to the road authority. For an immediate journey, be guided by the signs and conditions you encounter rather than a dated 'top ten' article.
