The rules essentially force them to take a longer weekend every other week. The regulations also added a requirement that any 34-hour rest period include two nights during which drivers have the opportunity to sleep between 1 a.m. and 5 a.m., the hours when people most crave sleep because of their bodies' circadian rhythms cause them to naturally slow down while it is dark outside. Those same rhythms often make it difficult for people to sleep during the day, or to get restful sleep if they do doze off.
Under Collins' provision, truckers could go back to taking 34 hours off between every work week with no requirement for two nighttime periods during their time off. The senator and trucking industry officials said it is safer for truckers to drive at night when there is less traffic and that current regulations increase truck traffic on roads during morning rush hours. Safety advocates and administration officials said there is no evidence that's the case.
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