If you were my daughter, (she has ASD) I'd advise you to think very carefully about the following things.
Be aware as you can be that your ability to read other peoples' intentions is not as honed as it is in NT people, so be twice as vigilant as you would normally be for anything that feels uncomfortable.
Can you say NO loudly and assertively enough if he suggests something you don't want to do and keeps trying to persuade you?
Can you confidently end the meeting with him and get back to the train safely or get a taxi home if you need to?
Do you know how to contact the Police silently if you need their help and cannot speak openly? If not, learn how to do that now. www.met.police.uk/contact/af/contact-us/us/contact-us/how-to-make-a-silent-999-call/
Bear in mind this man may not be who he says he is. If he looks different to any photos he's sent you, like a lot older, or even like a different person, then that's a Red Flag.
It's maybe a bit odd he's asked to meet you near his home.
If he has a drink waiting for you, that's a Red Flag. Do NOT drink it, it could be spiked. Say you'd prefer something different and you'll get your own.
Make sure you absolutely do not take your eyes off your drink.
He could be planning to suggest after your agreed meeting in a public place that you could go to his place, or he could try and make it seem you arrive there "by accident" by saying say let's go for a walk and then surprise, suddenly you're near his place, and as he's seemed so nice so far, why not go in? Major Red Flag.
Absolutely do not do this. Do not go out of a public area with him and definitely do not go into his house or his friends' house or anywhere else where he could isolate you.
I really hope all goes well for you and that he's a nice guy, but in this day and age, you need to be aware of all the above things and all the other good advice on this thread "just in case"