301-11.20—May my agency authorize a rest period for me while I am traveling?
        
        (a) 
         Your agency may authorize a rest period not in excess of 24 hours at either an intermediate point or at your destination if:
    
    
    
    
    
    
        
        (b) 
         When a rest stop is authorized the applicable per diem rate is the rate for the rest stop location.