Voilà l'interpretation:
http://fmcsa.dot.gov/rules-regulations/ ... guidence=Y
§395.3 Maximum driving time for property-carrying vehicles.
Question 1: May a motor carrier switch from a 60-hour/7-day limit to a 70-hour/8-day limit or vice versa?
Guidance: Yes. The only restriction regarding the use of the 70-hour/8-day rule is that the motor carrier must have Commercial Motor Vehicle CMVs operating every day of the week. The 70-hour/8-day rule is a permissive provision in that a motor carrier with vehicles operating every day of the week is not required to use the 70-hour/8-day rules for calculating its drivers’ hours of service. The motor carrier may, however, assign some or all of its drivers to operate under the 70-hour/8-day rule if it so chooses. The assignment of individual drivers to the 60-hour/7-day or the 70-hour/8-day time rule is left to the discretion of the motor carrier.
Question 2: Does a driver, employed full time by one motor carrier using the 60-hours in 7-days rule, and part-time by another motor carrier using the 70-hours in 8-days rule, have the option of using either rule in computing his hours of service?
Guidance: No. The motor carrier that employs the driver on a full-time basis determines which rule it will use to comply with §395.3(b). The driver does not have the option to select the rule he/she wishes to use.
Question 3: May a carrier which provides occasional, but not regular service on every day of the week, have the option of the 60 hours in 7 days or 70 hours in 8 days with respect to all drivers, during the period in which it operates one or more vehicles on each day of the week?
Guidance: Yes.
J'avoue que c'est flou,mais y doit pas avoir 2 cycles pour rien....