Travel issues for teams leaving the Charlotte area have forced NASCAR officials to alter the on-track weekend schedule in Mexico City.

As a result, NASCAR officials have chosen to delay the planned Cup Series practice session, rescheduling them for later in the afternoon. They have also pushed all NASCAR Xfinity Series practice sessions from Friday to Saturday. Additionally, the first of two NASCAR Mexico Series races will now run a few hours earlier on Friday.

Understanding the changes in the schedule for NASCAR's weekend in Mexico following logistical challenges in getting drivers to the venue.

NASCAR says ticket sales for this weekend’s events in Mexico City have gone well, and that security will be relatively normal, although videos have emerged of heavily armed troops protecting convoys of industry members.