it's a cutesy play on "park and ride", a common transit feature in the US where you take the prime real estate surrounding a major transit station and turn it into giant parking lots so that people can drive their cars to it.

The difference with "kiss and ride" is that there's no parking, it's just a drop-off area, as others have said. I guess the idea is to encourage "car-light" households where one person drives to work (or knowing the US, the idea might've originally been that the stay-at-home housewife did this) and their spouse takes transit, but US transit sucks so they have to drive to get to the transit