Originally Posted by rcfd13

Callouts are 2 hours for short call reserve and 12 hours for long call reserve. Long calls can be converted to short call a certain number of times per month, and long call usually goes to the more senior reserves.

In my experience on reserve actual 2 hour callouts were not that common. Typically I would get a trip assigned a day or two in advance, or they would call me at 4am to notify me of an 8-10am show time. You would probably be alright living an hour and 15 mins away as long as you kept your bag packed and ready to go. You may get an occasional missed assignment when they give you a 2 hour call out in the middle of rush hour.