November was NI’s worst month for injury collisions in 2025 — and serious casualties also peaked

Northern Ireland's busiest month for police-recorded injury collisions in 2025 was November. PureCar's analysis of the full-year PSNI dataset identifies 512 collisions that month, more than any other month of the year and 52 above August, the runner-up. February, with 344, had the fewest. The difference between the two months was 168 reported injury collisions. It is a substantial variation in what was recorded, but it is not a finding that bad weather, darkness or any single type of driving caused it.

The November result becomes more significant when the police casualty tables are examined alongside the collision counts. According to the PSNI's 2025 Key Statistics Report, 808 people were killed or injured in November, including nine who died and 117 who were seriously injured. That gives 126 people killed or seriously injured (KSI), the highest monthly KSI total of the year. November therefore led three separate measures: injury collisions, total casualties and the most serious casualty category.

These figures describe events in 2025, not a real-time warning for current November journeys. Their importance is that a headline count can be tested against different measures of harm, rather than presented as a dramatic statistic divorced from what happened to people.

A month-by-month picture changes the story

The year did not show a steady climb towards winter. January's 408 injury collisions were followed by 344 in February and 371 in March. The count rose to 407 in April and 455 in May, fell to 411 in June and 363 in July, then reached 460 in August. September recorded 428, October 423, November 512 and December 433. Added together, those twelve figures produce the official annual total of 5,015.

August was the second-highest month, rather than October or December. May exceeded October. July, despite falling in the summer, was the second-lowest month. This uneven distribution matters because it weakens any attempt to describe the calendar as a simple journey from safer bright months to dangerous dark ones. The time of year may be relevant to a collision investigation; the monthly series alone does not isolate its effect.

November accounted for approximately 10.2% of the year's 5,015 recorded injury collisions, despite occupying one of twelve months. It recorded about 17.1 injury collisions per day across its 30 days. February's 344 incidents over 28 days amount to approximately 12.3 per day. The gap remains when month length is taken into account: about 4.8 additional recorded collisions on an average calendar day in November. That is still not a risk per journey, because neither calculation includes how much traffic was on the network.

October, November and December together recorded 1,368 injury collisions; January, February and March recorded 1,123. The final quarter was therefore 245 incidents, or roughly 21.8%, higher than the first quarter. Yet the intervening six months did not move in one direction. A regional response built around the year-end increase needs to allow for that irregularity, especially when deciding whether an intervention should be seasonal or aimed at particular places and road users.

The full monthly sequence is available in PureCar's Northern Ireland Road Collision and Safety Explorer. Those are police-recorded injury collisions; damage-only incidents, unreported collisions and insurers' claims are not counted in that monthly display.

Nine deaths and 117 serious injuries: November was not only a volume peak

PSNI's official casualty appendix provides a second way to examine the same month. Of the 808 casualties recorded in November 2025, nine were killed, 117 were seriously injured and 682 were slightly injured. The 126 killed-or-seriously-injured casualties made it the highest KSI month. December followed with 114 KSI casualties, August had 107 and May 101. March recorded the year's lowest monthly KSI figure, 70.

Comparing November with February shows why collisions and casualties must be reported separately. February's 344 recorded injury collisions were associated with 541 casualties, comprising three deaths, 76 serious injuries and 462 slight injuries. November had 168 more collisions but 267 more casualties. A collision may injure more than one road user, so the two differences are not supposed to match.

November's total of 808 casualties also exceeded October's 617 and December's 668. In October, PSNI recorded three deaths and 84 seriously injured people; in December, six deaths and 108 seriously injured people. October's overall collision count was only ten below December's, but the severity and casualty composition were different. It would be misleading to judge the outcome of a month simply by counting incidents on a map.

Nine of Northern Ireland's 56 deaths in 2025 occurred in November, approximately 16% of the annual fatality total. The 126 KSI casualties represented around 11.2% of the year's 1,122 people killed or seriously injured. Those are shares of annual harm, not a calculation that November travel was 16% riskier than travel in another month. Road use, journey lengths and the locations of collisions are absent from those denominators.

The distinction is more than statistical tidiness. A response directed at reducing frequent slight-injury incidents might look different from one addressing a smaller number of collisions that inflict the gravest injuries. The monthly tables do not answer which intervention is needed, but they establish that the November pattern merits analysis on both fronts.

Comparing November with the previous year

The PSNI's appendix also provides 2024 casualty data, allowing a like-for-like November comparison for people injured, although PureCar's published monthly collision counts here are for 2025. In November 2024 there were 719 casualties: six deaths, 83 serious injuries and 630 slight injuries. In November 2025 the equivalent figures were 808, nine, 117 and 682.

That means November's total casualties rose by 89, or approximately 12.4%, between those calendar years. Serious injuries rose by 34 people, approximately 41%; KSI casualties rose from 89 to 126, a rise of 37, or about 41.6%. The number killed changed from six to nine. With small fatality counts, a change of three deaths produces a large percentage movement; presenting the actual number is more informative than leading solely with the 50% increase.

It would be unsound to claim from those figures that November 2025 suffered the same percentage rise in collisions, because the 2024 November collision count has not been established in this particular comparison. It would be equally unsound to assume an extra casualty means an extra collision. What the official release does demonstrate is a marked year-on-year increase in injuries during November, particularly serious ones.

November was not the only unusual month in the comparison. October 2024 recorded 788 casualties compared with 617 in October 2025. The relatively low October 2025 figure makes the November jump within that year appear sharper. Across the final two months combined, PSNI recorded 15 deaths in November and December 2025, against 16 during the same months in 2024. Therefore the two-month death toll was slightly lower even though November alone was higher. Looking at different periods yields different findings, which is why period selection has to be stated openly.

The annual direction was mixed in a similarly important way. Northern Ireland recorded 5,015 injury collisions in 2025 compared with 4,753 in 2024, an increase of 262, or 5.5%. Deaths fell from 69 to 56, while serious injuries rose from 939 to 1,066. A month with very high injury figures sits inside a year in which fatal and non-fatal serious outcomes moved in opposite directions.

What the thirteen-year record adds

The PSNI-based collision explorer places 2025 in a longer sequence. Northern Ireland recorded 5,820 injury collisions in 2013, 6,085 in 2014, 6,147 in 2015 and 6,225 in 2016. The totals were 6,081 in 2017, 5,749 in 2018 and 5,676 in 2019. The pandemic-era 2020 count fell to 4,223, followed by 4,704 in 2021, 5,116 in 2022, 5,058 in 2023, 4,753 in 2024 and 5,015 in 2025.

On that measure, the 2025 total was 661 below 2019 and 1,210 below 2016, despite rising from 2024. The annual numbers undermine two equally simplistic descriptions: that Northern Ireland's recorded injury collisions have returned to their mid-2010s high, and that the recent year-on-year increase can be dismissed because the longer total is lower. Both the long-run change and the latest rise are real features of the series.

There is another qualification. In its annual statistics, PSNI says 1,122 people were killed or seriously injured in 2025, compared with 896 in 2016. In other words, the overall collision count in 2025 was substantially lower than in 2016, but the KSI casualty count was higher. The two trends mean that fewer recorded injury incidents did not automatically translate into fewer people with the most serious outcomes. A monthly assessment that looks only at collision frequency could overlook that wider change.

The cause of that divergence cannot be determined from national yearly totals alone. Changes in the age or type of road users, the severity of particular events, reporting practices and other characteristics would need evidence. But the comparison is sufficient to show why severity matters in any analysis of a November peak.

Why darkness and weather remain hypotheses, not conclusions

November brings shorter daylight hours in Northern Ireland and includes considerable commuting outside full daylight. That calendar reality may help investigators frame sensible questions, but there is no weather attribution in the headline monthly table. It would be irresponsible to say rain, frost or darkness caused the 512 collisions without examining incident times, lighting conditions, weather fields and comparable travel exposure.

The same applies to speculation about speeding, phones or alcohol. PSNI's 2025 report identifies inattention or diverted attention as the principal factor associated with 826 injury collisions across the year. It records driving too close in 548, and emerging from a minor road without care in 409. Those are national annual figures. They cannot be assigned to November or used to explain its peak unless the month-specific underlying records support that connection.

A decisive investigation would compare the distribution of collision times in November with earlier months, distinguishing darkness from the busiest travel periods. A count of collisions after sunset needs to be weighed against the share of journeys taking place after sunset. Otherwise normal commuting patterns could be mistaken for elevated danger. Similar care is required for road type: a rural high-speed single carriageway, an urban junction and a motorway slip road may create very different questions for engineers and police.

The Department for Infrastructure's 2025 road-safety strategy report provides context for travel behaviour but not an explanation for this November result. It reports that, under free-running conditions between 11pm and 7am, three-quarters of monitored vehicles exceeded limits on built-up roads of up to 40mph. That observation concerns monitored free-flow traffic and is not a claim that 75% of drivers involved in November collisions were speeding. Mixing the two would create a causal assertion the sources do not support.

It would also be a mistake to describe the 2025 November figure as an annual winter forecast. Only one calendar year's month-by-month injury collisions have been used to identify the peak here. Establishing a reliable recurring seasonal pattern would require several years of monthly totals, with comparable definitions, and ideally traffic-volume adjustments.

A further check is the relationship between the collision and casualty series within the month. November's 808 casualties divided by 512 injury collisions gives approximately 1.58 casualties per reported incident. February's 541 casualties divided by 344 collisions gives approximately 1.57. These ratios are very close despite the sharp difference in total counts. They do not show that collisions were equally severe, because a ratio of all casualties includes slight, serious and fatal outcomes together. The separate KSI columns remain necessary to detect differences in serious harm. In November, for instance, 126 of the 808 casualties were killed or seriously injured, approximately 15.6%; in February the comparable share was 79 of 541, about 14.6%. Neither comparison estimates the risk faced by an individual traveller, but both put useful limits on claims that one month's extra collisions necessarily contained disproportionately many casualties per incident.

The people behind the monthly totals

Official statistics are necessarily impersonal, but their units are not interchangeable abstractions. Nine deaths in November means nine people were killed. The 117 seriously injured are people who experienced the most serious non-fatal injury category used in the police statistics. The number 682 describes additional people recorded as slightly injured; it is not a count of events and it should not be confused with people escaping unharmed.

PSNI's wider 2025 tables show that drivers accounted for 41.8% of KSI casualties, pedestrians 19.0% and passengers 18.8%. The release also records 115 children under 16 killed or seriously injured across the year and 227 KSI casualties aged 16–24. Those national figures describe different forms of exposure and harm, but they are not November-specific. They show why a monthly breakdown by road user and age would be useful: a spike dominated by vulnerable users would demand a different emphasis from one concentrated among vehicle occupants.

The statistics do not contain interviews with bereaved families, emergency crews or those recovering from injuries, and this article does not claim to have conducted them. Responsible reporting can state what the verified record establishes without inventing testimony or using imagined scenes to dramatise tragedy.

The question for decision-makers is not simply how to push a high month below 512 the following year. It is what kinds of collision and injury produced the 2025 peak, whether the same pattern appears over several years, and what evidence would identify an effective response. A narrow focus on suppressing a total may miss the severity of incidents; an emphasis on fatalities alone may ignore serious injuries that rose sharply across the year.

What can be checked in the public record

PureCar's monthly dashboard provides the twelve collision counts and annual total. The PSNI's 2025 Key Statistics Report, published on 27 March 2026, supplies the casualty-by-month breakdown, and its tables make the comparison with 2024 reproducible. The report states that injury collision records had been processed for 99.8% of reported 2025 incidents at publication, including all fatal collisions. It also cautions that these statistics cover injury collisions reported to police; a degree of under-reporting can occur.

The result is an evidence-backed finding with a clear boundary. November 2025 recorded the most injury collisions in Northern Ireland that year, the largest number of total casualties and the most KSI casualties. It also saw nine deaths. A reader can verify all of those claims in the cited public series. What they cannot infer is that a particular weather event, stretch of road, driver behaviour or intervention explains the increase.

That distinction protects the usefulness of the story. The striking number is a reason to scrutinise the circumstances of real collisions—not a licence to manufacture an explanation. The full annual dataset makes the November peak worth reporting; a carefully defined next analysis is what could turn that finding into targeted, testable road-safety action.