With absolutely no details given on this question, I'm going to take a guess. Normally speaking, it's where you park your car and are given a ride to your destination. If you're attending a concert, you could park in a lot a mile away and ride the shuttle to the venue, so the area around the venue is not crowded with cars. Hope this helps. You might include some kind of details on your next question so we have an idea of what you're talking about.
There is sometimes parking lots near subway/bus terminals to encourage people to park their cars there and ride the public transit to work/shopping.
Where you park your car and then ride the train or bus.