I think Birmingham may have Hertfordshire beat, particularly with the infamous spaghetti junction...<p><a href="http:&#x2F;&#x2F;www.telegraph.co.uk&#x2F;motoring&#x2F;news&#x2F;6662562&#x2F;Birminghams-Spaghetti-Junction-Britains-most-intimidating-road.html" rel="nofollow">http:&#x2F;&#x2F;www.telegraph.co.uk&#x2F;motoring&#x2F;news&#x2F;6662562&#x2F;Birminghams...</a><p><a href="https:&#x2F;&#x2F;en.m.wikipedia.org&#x2F;wiki&#x2F;Gravelly_Hill_Interchange" rel="nofollow">https:&#x2F;&#x2F;en.m.wikipedia.org&#x2F;wiki&#x2F;Gravelly_Hill_Interchange</a>