People don't leave because there is a road, necessarily; they leave because they are fleeing something. Whether or not the road is closed, people will still find a way to leave. People don't go there because they are attracted by a light in the distance. That would be too simple.
Among all the reports I heard, there were no complaints from people who suffered from using that road. That surprised me. Everyone was grateful for the Canadian reception. I have nothing painful to report from the people I talked to.
All I could suggest would be to strengthen the intake capacities in places where people are going to cross anyway, to avoid humanitarian problems.