It's not the width of the roads that's the challenge, but driving on the opposite side.
Before we emigrated, I was a develpoment engineer at Norton-Villiers, riding the Norton Commando for endurance testing. I did about 40,000 road miles in about 15 months!
When we emigrated. I took one look at the little old ladies driving their Oldsmobile 98's on the freeway, 10 mph below the speed limit and looking through the steering wheel. They probably could not see the end of the hood. I decided that motorcycles were no longer my vehicle of preference.
It's really the "wrong-side" thing that gets UK, Oz, NZ people into trouble, particularly in circumstances where reactions are instinctive. I hope Caledon has enough LH side-of -the-road driving experience already that the vehicle size is his only issue.