Table 1b: DfT serious/slight adjusted and unadjusted casualties, 2004 to 2021

DfT serious/slight adjusted and unadjusted casualties, 2004 to 2021
	DfT adjusted serious	DfT adjusted Slight	Dft unadjusted Serious	Dft unadjusted Slight	DfT Serious/Slight total
2014-18 average	2,908	7,071	1,628	8,352	9,979
2004	4,931	13,152	2,741	15,342	18,083
2005	4,849	12,625	2,643	14,831	17,474
2006	4,707	12,105	2,614	14,198	16,812
2007	4,313	11,444	2,364	13,393	15,757
2008	4,399	10,862	2,571	12,690	15,261
2009	4,112	10,593	2,281	12,424	14,705
2010	3,558	9,558	1,964	11,152	13,116
2011	3,416	9,153	1,871	10,698	12,569
2012	3,521	8,877	1,956	10,442	12,398
2013	3,109	8,184	1,662	9,631	11,293
2014	3,103	7,924	1,691	9,336	11,027
2015	2,992	7,779	1,597	9,174	10,771
2016	3,057	7,616	1,693	8,980	10,673
2017	2,741	6,469	1,577	7,633	9,210
2018	2,649	5,566	1,580	6,635	8,215
2019	2,450	4,878	1,842	5,486	7,328
2020	1,532	3,383	1,532	3,383	4,915
2021	1,615	3,348	1,615	3,348	4,963
2021 change on 2020	5.4	-1.0			1.0
2020 change on 14-18 average	-44.5	-52.7			-50.3

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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