Table 1a: DfT serious/slight adjusted and unadjusted collisions, 2004 to 2022

	DfT adjusted serious	DfT adjusted Slight	Dft unadjusted Serious	Dft unadjusted Slight	DfT Serious/Slight total
2014-18 average	2,439	5,207	1,412	6,235	7,648
2004	4,042	9,524	2,313	11,253	13,566
2005	3,987	9,128	2,238	10,877	13,115
2006	3,894	8,818	2,240	10,473	12,713
2007	3,584	8,500	2,029	10,056	12,085
2008	3,700	8,175	2,241	9,635	11,876
2009	3,458	7,882	1,998	9,342	11,340
2010	2,977	7,121	1,709	8,389	10,098
2011	2,915	6,873	1,670	8,121	9,791
2012	2,969	6,541	1,714	7,796	9,510
2013	2,592	6,206	1,420	7,378	8,798
2014	2,626	5,986	1,482	7,134	8,616
2015	2,542	5,756	1,419	6,881	8,300
2016	2,518	5,641	1,428	6,731	8,159
2017	2,294	4,621	1,366	5,550	6,916
2018	2,215	4,032	1,367	4,880	6,247
2019	2,095	3,423	1,626	3,892	5,518
2020	1,363	2,402	1,363	2,402	3,765
2021	1,445	2,327	1,445	2,327	3,772
2022	1,527	2,454	1,527	2,454	3,981
2022 change on 2021	5.7	5.5			5.5
2021 change on 14-18 average	-37.4	-52.9			-47.9

Source: Department for Transport.

The unadjusted figures in this table are National Statistics

The adjusted figures in this table are Experimental Statistics

Unadjusted figures in this table may not match those in other tables in this publication as DfT close their database each year but Transport Scotland keep theirs open.

Figures for serious and slight injuries are as reported by police. Since 2016, changes in severity reporting systems for a large number of police forces mean that serious injury figures, and to a lesser extent slight injuries, are not comparable with earlier years. Adjustments to account for the change have been produced.

More information on the change and the adjustment process is available at the following address. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/833813/annex-update-severity-adjustments-methodology.pdf

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