I'm happy about the dual carriageway section of the A19 and the A1 (although it can get very busy) its certainly preferable to the single carriageway congestion around York.
Tbh the A1 isn't all that bad - my parents' shop is off the A59 and my dad is down there in the early morning (5am) and my mum is there for half 8/9am and it takes the same amount of time give or take a couple of minutes. It takes me considerably less time whenever I go, but that's another matter

You can always get a nice clear run down the old A1 (A168) from Dishforth though, or if not it's pretty much straight so plenty of overtaking opportunities

The A59 into York can be a ***** though if there's a tractor/accident/roadworks/muppetdoing35mphonaniceclearday!
Could you not drive to a different train station and train it in from there? Although I don't know anything about train fares/parking costs at stations so it might not be viable - but I think Thornaby, Yarm and Middlesbrough are all on the line to York via Northallerton & Thirsk. Just a thought
