‘The latest statistics confirm that casualties on Scotland’s roads are at the lowest levels since records began. Through actions taken by all those involved in improving road safety, the longer-term trends show a 50% reduction in fatal injuries, a 39% reduction in serious injuries and a 61% reduction in child fatalities compared to the 2004-2008 baseline figures.’

Could the "controversial" use of average speed cameras, so often criticised by Conservatives, have played a part in this?
https://thoughtcontrolscotland.com/2018/10/26/child-deaths-on-the-road-fall-61-to-lowest-level-ever/

John Apter chairman of The Police Federation for England and Wales has praised the SNP’s decision to give officers north of the border a 6.5% pay rise. At the same time he has accused the Westminster Government of showing “contempt” to police officers in England and Wales.
https://theorkneynews.scot/2018/10/04/england-and-wales-police-federation-chief-praises-scottish-pay-rise-while-bashing-tory-response-in-rest-of-uk/

A staggering reduction in homicides in 10 years.
https://www.youtube.com/watch?v=1xbz4_s0xcc

SCOTLAND appears set to become the first part of the UK to pass a ban on the smacking of children, following the publication of a Member’s Bill by Green MSP John Finnie to remove the defence of “justifiable assault” from Scots law.
https://www.commonspace.scot/articles/13249/scotland-set-be-first-part-uk-ban-smacking-children-greens-publish-bill