This article (from 2007) has a map that stuck with me.  It shows the decreasing range of permissible movement over the past century in Sheffield, England.<p><a href="http:&#x2F;&#x2F;www.dailymail.co.uk&#x2F;news&#x2F;article-462091&#x2F;How-children-lost-right-roam-generations.html" rel="nofollow">http:&#x2F;&#x2F;www.dailymail.co.uk&#x2F;news&#x2F;article-462091&#x2F;How-children-...</a><p>It would be very interesting to have a similar map across different countries and compare.<p>The thing is, most parents I know would agree this is troubling, but few of them actually allow their children to roam with anything close to actual freedom until high school age.