Best Trip Planner?

I'm looking for a trip planner that will advise me roads to avoid with a 34 ft travel trailer. I subscribed to CoPilot because it had the best reviews by truckers, input all my vehicle information, put in a destination and it promptly gave me the same route as google maps that almost caused my husband to sell the trailer last year! We came around a tight corner with a cliff on our side and a drop off on the opposite side. We met a semi coming from the opposite direction and we could not both navigate the corner at the same time. Fortunately, the semi was able to eek forward off the road just enough that he was able to get by but with only about 4 inches (literally) to spare before his trailer would have taken out the front corner of our pickup. Neither of us couldn't back up due to the line of cars behind us.

So obviously, I'm either not using CoPilot properly or it's not very good. Do any of the planners in this thread advise to avoid such roads?

I should clarify that we don't have a Garmin or other GPS. Just ipad or phones. Not opposed to Garmin or other GPS...just don't have one yet