In comparisons, 来得 + adjective means 'is more (adjective)': 比...来得快 (is faster than...). This is an alternative to 比...更快. The opposite is 来不得 (cannot be done; is unacceptable).
usage
来得及 (láidejí) means 'there's still time' and 来不及 (láibùjí) means 'too late.' These are extremely common in daily speech: 还来得及!(There's still time!)