Road safety
What the network reveals
Aggregated, anonymous session data turns tyre condition from an unknown into a measurable national indicator.
Simulated real-world data being used for demonstration purposes
Vehicles checked
41,284
Tyres checked
165,136
Tyres corrected
26%
Probable slow punctures
1,021
Pre-journey checks
14,822
EV sessions
12,744
Motorcycle sessions
2,316
Materially low vehicles
9,834
Roughly one in four tyres in this simulated dataset needed a correction of more than 2 PSI, and one vehicle in four was materially low on at least one tyre. Repeat pressure loss at the same wheel across sessions is the strongest early indicator of a puncture or valve leak - the kind of signal only a connected, four-tyre check can produce.
Evidence base
The road-safety case, with sources
Tyre condition is one of the few crash factors that is cheap to fix, measurable at scale, and currently unmonitored between MOT tests.
Crash involvement rises with pressure error
Pre-crash analysis of national crash data found vehicles running 25% or more below the recommended pressure were markedly over-represented in tyre-related crashes.2012
Regulators already quantified the benefit
The FMVSS 138 regulatory impact analysis put numbers on the casualty, tread-life and fuel benefits of maintained inflation before TPMS was mandated.2005
Cited on this page
- US National Highway Traffic Safety Administration (2012). Tire-Related Factors in the Pre-Crash Phase (DOT HS 811 617). NHTSA National Center for Statistics and Analysis.
- UK Department for Transport (2025). Reported road casualties in Great Britain (annual statistics). DfT official statistics.
- TyreSafe (2026). Stagnant road safety, surging tyre defects: analysis of the latest DfT casualty and collision figures. TyreSafe.
- US National Highway Traffic Safety Administration (2005). Final Regulatory Impact Analysis, FMVSS No. 138: Tire Pressure Monitoring Systems. NHTSA Office of Regulatory Analysis and Evaluation.
- Horne, W. B. and Dreher, R. C. (1963). Phenomena of Pneumatic Tire Hydroplaning. NASA Technical Note D-2056.
These are published third-party sources, not AiR simulation. The full bibliography - peer-reviewed papers, reference monographs, government reports, international standards and official statistics - lives in the science lab.
Open the research and full bibliographyWhy measurement matters
Tyre condition is the least instrumented variable in road safety
Casualty statistics record that a tyre was defective after a collision. Nothing records how the national fleet is doing today. A network of instrumented sessions turns that blind spot into a continuous, anonymous indicator.
GB tyre-related KSIs, 2025
0
Up 19 percent year on year. DfT, via TyreSafe.
MOT tyre failures each year
~0m
DVSA data, proposed as a national safety indicator.
UK cars 10 percent or more below spec
0%
The Motor Ombudsman, June 2024.
Drivers not confident inflating tyres
0%
Same study. The equipment, not the driver, is the failure point.
Every session produces the same four measurements at the same point in a journey: what the tyre was, what it should have been, what it became, and whether it held. Aggregated, that is a national condition index updated hourly rather than annually.
- Deviation from approved specification, by region and vehicle class
- Repeat under-inflation flags that indicate probable slow punctures
- Seasonal swing separated from genuine leak behaviour
- Motorcycle exposure tracked separately, where tyre-related KSIs hit a decade high
Questions