There are reports of they being forced to join. Here they throw stones at the windshields to make them stop. The legit trucker's strike have been taken by interventionists, this is people asking for military dictatorship (yeah there is still this kind of stupid), not cheaper fuel. This video shows their methods.
First Law ofProcrastination: Procrastination shortens the job and places the responsibility for its termination on someone else (i.e., the authority who imposed the deadline).
Fifth Law of Procrastination: Procrastination avoids boredom; one never has the feeling that there is nothing important to do.