crush load

Short definition from Wiktionary

Noun

1. 1
   The maximum number of passengers that can physically fit within a transit vehicle without requiring severe contortions by said passengers.
2. 2
   The maximum number of passengers that can physically fit within a transit vehicle without requiring severe contortions by said passengers: A situation in which one or more transit vehicles are carrying the maximum number of passengers that they can physically accommodate without requiring severe contortion of passengers.