While this will help you stay physically safe, this tip is more about personal self-control and responsibility. Giving yourself a “curfew” allows you an out so that things don’t go beyond where you’re willing to take them the first time, whether that’s because the situation has become uncomfortable and you need an excuse or you need something to help you halt your passions.
This one is really about personal responsibility.
Or how awkward it is that your date is also sleeping in his car in the same parking lot because it was also too late for him to drive home.
That drive home? Also awkward.
Don’t back yourself into a corner like this. Make good choices. Doing so from the beginning will help you exercise discretion and responsibility throughout the relationship.