LHS wrote:
If the ticket is for your car, then you can ignore it and would be totally fine. But, since it is a rental, in the contract it says you are obligated to pay any ticket. So, just to get out of trouble, you'd better just pay the $50 and be done with it. Or you can wait to see what the car rental company will do to you and then make a determination - there could be a 20% penalty later on.
Actually no, you would likely not be be "totally fine" if the ticket is for your car. Parking ticket reciprocity laws are becoming more common as states hook up databases to each other. A parking ticket you get in Texas can show up on your California DMV, a ticket you get in New York can show up on your Jersey DMV, etc.
The era of merely skipping out on these things is over. And not only will you have to pay the value of the ticket you will usually have to pay substantial penalties.