The SmartPass is available FREE to eligible hospital and university employees.
It allows unlimited travel on the following transit services:
VTA light rail
The SmartPass is valid for the full calendar year, seven days a week. Stanford purchases these passes primarily for your commute to Stanford; however, there is no restriction on their use. You can use them to travel free to a Giants' game, to get to the airport, or to skip exorbitant parking rates while spending the day in the city.
Since Stanford pays for passes for all eligible employees, regardless of whether or not employees use them, it does not save the university or hospital any money if you return or do not request your transit passes. So, go ahead and request them – and use them as little or as often as you like.