Depots are crucial in one other respect: [[Renovation and Upgrade|Renovating and upgrading]] older engines. Please see [[Vehicle Aging]] for a detailed explanation why you need to send trains to your depots before their fuel costs explode.
* ''HintHints:'' * If you build two (or more) depots right next to each other they count as a single depot (much like how two adjacent platforms form a single station). This is especially useful if you play with "Only one depot" enabled in the Advanced [[Game Settings]], since with careful rail layout it enables you to have trains due for renovation use more than a single track/depot. (Trains "sent to depot" always seek out the nearest depot)* If you choose the "Only one depot" game option, expect a logistical nightmare for larger networks (when you have hundreds of trains)* Even if you allow yourself many depots, there is a hard limit of 256 depots coded into the game. Note: even bulldozed depots count against this number.
==Base Depot==