Traveling in Hillingdon on a Friday between 6-7pm? You might want to use extra caution, as research completed by Whites Traffic Management revealed that this was statistically the most likely time for road traffic accidents across the borough.*
The most common month for collisions? November, a month notorious for fog, dark nights, and inclement weather.
The figures, based on over 10 years of the Department for Transport’s road safety statistics**, indicate that drivers are more likely to experience collisions in Hillingdon during the weekdays, with Friday topping the list.
In contrast, the least likely day across Hillingdon for crashes is a Sunday, and fewest collisions happened between 3-4am, compared to the rest of the day.
The data also revealed that the peak time and day for road traffic accidents across all of London was a Friday, with October being the most collision-heavy month when taking all boroughs into account.***
Luke Dempson, Head of Communications at Whites Traffic Management, said:
“Transport for London data**** tells us that Londoners take almost 10 million car journeys daily, and it’s important for every one of those drivers to take care on the roads.
“Our research showed that the evening rush hour on a Friday is the most likely time for a collision to happen in Hillingdon. The stress of commuting congestion and the fatigue at the end of a working week may contribute to these numbers.
“We also found that November was the most likely month for a collision based on the data, with October being the second most likely month for drivers to get into accidents while driving through the borough.
“Our passion at Whites Traffic Management is to help our clients ensure that every traffic management project is safe for drivers, pedestrians, and the traffic management operatives involved in directing the flow of traffic.
“These findings highlight just how important it is for traffic management plans across the borough to take the busiest periods on Hillingdon’s roads into account.
Notes
* as of 13 May, 2026
** data obtained from the Department of Transport collision analysis tool: https://department-for-transport.shinyapps.io/collision_analysis_tool/, selecting all available years and selecting region: Hillingdon
*** data obtained from the Department of Transport collision analysis tool: https://department-for-transport.shinyapps.io/collision_analysis_tool/, selecting all available years and selecting all London regions (excluding London: Heathrow airport).
**** Information obtained from the TFL Travel in London 2025 report: https://content.tfl.gov.uk/travel-in-london-2025-consolidated-estimates-of-total-travel-and-mode-shares-acc.pdf
About Whites Traffic Management
Whites Traffic Management is a leading provider of traffic management solutions and consultancy across England. Their senior leadership team has 30 years of experience working for local authorities, utility companies, and major infrastructure projects to deliver traffic management planning and preparation, traffic marshall services, road safety audits and swept path analysis for large loads.