(25 Aug 2015, 10:24 pm)S813 FVK wrote There is a big difference between the X15 and X9/X10.
The X15 is on and off the A1 and, for most of the route, it is a standard single carriage way like most roads (minus the Dual Carriageways and Motorways). I am aware that some of the X15 route is on a dual carriage way (like when it first joins the A1 heading north at Gosforth). However, all of the A19 covered by the X9 and X10 is dual carriage way and doesn't keep exiting at every single possible point (not saying the X15 does that because i know for a fact it doesnt). That could be something to do with it.
The X15 barely reaches 40-50mph on the Morpeth-Alnwick stretch, it turns off at Felton and again into Shilbottle. I'm not sure on the Alnwick-Berwick section, but I'll say either held up by a tractor or other cars causing backlogs, as I've been in the car multiple times.