Table 2 Summary of included systematic reviews

Driver education

4

Curry et al., 2015 [19], Ker et al., 2005 [20], Korner-Bitensky et al., 2009 [21], Roberts and Kwan, 2001 [22]

Enforcement

11

Aeron-Thomas and Hess, 2005 [23], Blais and Dupont, 2005 [24], Bunn et al., 2003 [12], Elder et al., 2002 [25], Erke, 2009 [26], Erke et al., 2009 [27], Goss et al., 2008 [28], Høye, 2014 [29], Peek-Asa, 1999 [30], Pilkington and Kinra, 2005 [31], Wilson et al., 2010 [32]

Legislation

3

Foss and Evenson, 1999 [33], Russell et al., 2011 [34], Zwerling and Jones, 1999 [35]

Mixed Interventions

3

Aguilera et al., 2014 [36], Bergen et al., 2014 [37], Lefio et al., 2018 [38]

Other interventions

3

Ditter et al., 2005 [39], Kwan and Mapstone, 2006 [40], Subzwari et al., 2009 [41]

Public Awareness

5

Duperrex et al., 2002 [42], Elder et al., 2005 [43], Elder et al., 2004 [44], Phillips et al., 2011 [45], Yadav and Kobayashi, 2015 [46]

Structural improvement

4

Beyer and Ker, 2009 [47], Elvik, 2003 [48], Elvik, 2017 [49], Fu et al., 2016 [50]

Vehicle Design Improvement

2

Elder et al., 2011 [51], Erke, 2008 [26]