Taxi Rank

Normal sudoku rules apply.

The digits along each coloured route can be read as a 6-digit 'route number', starting at the square and finishing at the spot.

These nine route numbers can be ranked from lowest to highest. A circled yellow taxi on a route indicates that route's rank. (A '1' taxi would be on the route with the smallest 6-digit route number. None of the route numbers are the same, so there are no tied ranks.)

• Box borders divide a BLUE ROUTE into segments whose digits have the same sum.
• Adjacent digits on a GREEN ROUTE have a difference of at least 5.
• Digits on a PINK ROUTE form a non-repeating, consecutive set in some order.