Debating: Near to future Transit or not?

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Hello BP, so the area that i focus on is currently developing a new mass transit that will be complete very soon. But after some thinking & reading investing near to transit, i'm currently lose because i see the pros & cons, and thinking of the possibility that will affect my potential subsale apartment. 

Will the tenants of the area decided to move out? Does the appreciation increase out weight the cons? Does it matter if my tenants are A, B or C? Does the increase in parking fees to encourage the people to use the upcoming transit going to affect positive to my apartment? Need help again.