Source: Elines

Reserve Preferencing runs each night and assigns trips for the next day with report times between 0500 HDT and 2400 HDT. Trips reporting between 0001 HDT and 0459 HDT are to be assigned to Ready Reserves.

In keeping with the intent of the Notice of Assignment rules in Section 8.K. of our JCBA, that is to provide fifteen (15) hours’ notice at the domicile, most assignments for trips reporting between 0001 HDT and 0459 HDT will have to be made during the day, prior to Reserve Preferencing. Those assignments would go to Reserves who are Ready Reserves for that day and also on Reserve availability days for the next day as well as the requisite number of days necessary to cover the assignment.

Example:

On October 2, we will assign, through Reserve Preferencing, all trips with check in times between 0500 HDT and 2400 HDT on October 3. Trips reporting between 0001 HDT and 0459 HDT on October 3 will need to be assigned on October 2 to a Ready Reserve who is on call on October 2 and who will also be on Reserve on October 3 and has days of availability for the length of the trip (or who can be assigned into their first or second day off, if necessary, to cover the trip).

It is possible to assign a trip reporting between 0001 HDT and 0459 HDT to a Ready Reserve who is returning from their day off at 2400 HDT, if the trip cannot be covered earlier by another Ready Reserve. 

Keep in mind, Reserves coming from days off are required to be available for contact at 0001 HDT of their first day on call and available to report for duty at 0400 HDT or later.