This is just common sense. Don't go anywhere with anyone you don't know if you don't have a way to get out of the situation.
Chances are your date is a good person, but save the alone time for down the road. If they are worth dating again there will be plenty of time for that later.
These days so many people are meeting people online, and as much as you think you can get to know someone via the web, you really can't. They may be putting on an act or saying the same things to 100 different people hoping any one of them will take the bait.
I recently had a blind date. I didn't know a thing about him except his first name, and that's all he knew about me. A dear friend set us up so I figured the guy would be "safe" but I still made sure we met in a public place and early enough in the evening that I could leave if he turned out to be a creep. We met for afterwork drinks and my plan was to make an excuse to leave before we went out to dinner if he was icky or stay for dinner if he was okay.
Always meet in public and have a plan to leave if you sense anything odd. Don't worry about hurting their feelings if you want to get out of the situation. You'll never see them again anyway so who cares.