it was successful in that it started the truckers in uniting in a common cause, if by shutting down the trucks nationwide, no it didn't but it never stood a chance of doing that, it was a first stepping stone.
ultimately the jury is still out it all depends on what happens, if we finally get together enough,say for instance on the 25 shutdown and it is successful then history will show that the APRIL shutdown was the catalyst the effected change.