If you want to drive on roads here in North America with big things like commercial trucks it is in your best interest to be able to speak English and be able to communicate effectively the language of this great country.
I don't disagree with that point. People should be able to read, write and speak English before being allowed to drive large trucks all over the place. I'm just saying that speaking English v. reading and writing English and totally different skills and just because one can pass a written driving test doesn't mean that they should automatically be able to speak English as well.