RULE 73. ROAD SERVICE.  Where regularly assigned to perform service within switching limits, engineers shall not be used in road service when road engineers are available, except in case of emergency. When yard engineers are used in road service under conditions just referred to, they shall be paid miles or hours, whichever is the greater, with a minimum of one hour, for the class of service performed, in addition to the regular yard pay and without any deduction therefrom for the time consumed in said service.    

QUESTIONS AND ANSWERS: How does Rule 73 apply in following examples:  

1ST. Work 5 hours in yard, then used in road service 4 hours, making 20 miles; total spread 9 hours? 

Answer. Eight hours at straight yard rates, 1 hour at yard overtime rates (time and one-half), and 4 hours at pro rata road rates.  

2nd  Work 2 hours in yard, used in road service 30 minutes, making 5 miles; returns to yard and works 2 hours; again used in road service for 1 hour, making 10 miles; then returns to yard and works 2 hours and 30 minutes; total spread, 8 hours?  

Answer. Eight hours at straight yard rates, 1 hour at pro rata rates for first road service and 1 hour at pro rata road rates for second road service.  

3rd  Work 1 hour in yard, used in road service for 1 hour, making 20 miles; returns to yard and works 5 hours; again used in road service for 2 hours, making 15 miles; total spread, 9 hours? 

Answer. Eight hours at straight yard rates, 1 hour at yard overtime rates (time and one-half) 20 miles at pro rata road rates for first road service, and 2 hours at " pro rata road rates for second road service.