Iowa Code Title VIII. Transportation [Chs. 306-330B] § 321.449A. Rail crew transport drivers

a. The driver shall not drive such a vehicle more than ten hours following eight consecutive hours of uninterrupted rest.

b. The driver shall not drive such a vehicle for any period after having been on duty for fifteen hours following eight consecutive hours of uninterrupted rest.

c. The driver shall not accept a call for service from the driver's employer during a period of uninterrupted rest.

a. “Employer” means a railroad worker transportation company, as defined in section 327F.39, for whom the driver performs a service, either for wages or as an independent contractor.

b. “On duty” means all time from the time a driver begins work or is required to be ready to work until the time the driver is relieved from work and all responsibility for performing work, whether or not the driver is compensated for all of the time. A driver may drive more than one assigned trip, as long as the trip falls within the on-duty period. A driver “begins work” when the driver enters a transport vehicle to begin a trip assignment and is not “relieved from work” until the driver has exited the transport vehicle for the final time.

c. “Uninterrupted rest” means that the employer shall not communicate with the driver by telephone, pager, or in any other manner that could reasonably be expected to disrupt the driver's rest.