Consider the following scenarios:
Two automated parking systems with a 300 spaces capacity are built. The structure cost in each of them is identical- let’s assume $3MM.
System A has a performance level of 100 cars/hour, while system B has a performance level of 200 cars/hour.
To achieve a higher performance level, system B will have more system components (lifts, shuttles, etc.) than system A.
Let’s assume the equipment cost for system A is $4MM and for system B it is $7MM.
In total, System A will cost $7MM and system B will cost $10MM.
If divided by the capacity (which is 300 spaces for each), system A will cost $23,333 per-space while System B will cost $33,333 per-space.
Doesn’t conventional parking require the same rule?
At this point you will probably ask yourself “how come performance is not a factor in conventional parking”? The reality is that performance should and does matter for conventional parking. The difference is that in conventional parking, the “system performance” is how long it takes drivers to get to their cars (elevator/stairs), drive it down the ramp and leave through the gate.