Speaking as an informed observer, be aware there may be work available for you, should a strike occur.
In my region, members of our local have preference over casuals. Hours worked apply to benefits. Contact your local and get the skinny on working for ABF or YRC union companies to determine if this applies to you. There are options if this comes to a strike. It may not be wages to which you have become accustomed, but it may keep the ‘wolves’ away.
The freight goes somewhere, and the aforementioned companies are desperate for quality drivers.