Some laws *can* be hard to read, but you'll find that if you try to re-write them in "Plain English", while maintaining the same meaning and level of specificity, they'd be even longer than they already are.
The U.S. Constitution only has 7,641 words in the whole thing, and that's including the signatures and the amendments. But as a result, it's vague; so much so that we've been arguing over it since it was written, and we have an entire permanent court that does little else but interpret it.
In contrast, the motor vehicle laws in your state are probably several times longer than the Constitution, but they're probably pretty specific, and not too hard to read or understand.