they're sleepy. why weaken the law at all in the senate? >> reporter: it depends on who you talk to. these lawmakers who are calling for this change in the rest rules, they actually don't think that it's weakening the law. they would argue that by putting those early morning restrictions saying you can't drive -- and to be clear, that would only apply to people who reach a certain amount of driving time. if you've gotten to the 70-hour mark, this would apply to you. if you had not, this would not apply to you. for those drivers who have been on the road for a really long time, the rules now say that yo that has to include those early morning hours, 1:00 to 5:00. those arguing against it say, you know what, that's going to put a lot more trucks on the roadwaying during the daylight hours when you and i are on the rode with a lot of other people. that would create even more crashes. there are arguments on both