Having recently driven this stretch of highway, I can say that the lanes have been narrowed so much that trucks do not have sufficient room. Perhaps one, somewhat wider, lane should be designated for trucks on the far right and they should be required by law to stay in that lane - at least until construction is complete.

Overall, we need to divert more heavy freight to rail and put far more restrictions on trucks driving on 400-series highways. One step might be to ban the transport of flammable substances and dangerous chemicals on these highways altogether.