Consider carefully and decide to be beyond the tramline (5,3)

I believe the answer is:

think out

I'm a little stuck... Click here to teach me more about this clue!

'decide to be beyond the tramline' is the definition.
I can't judge whether this definition defines the answer.

'consider carefully' is the wordplay.
'consider' becomes 'think' (I've seen this before).
'carefully' becomes 'out' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'think'+'out'='THINK OUT'

'and' acts as a link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.