We have noticed that most Travelers will wait in general anywhere from 12-24 hours after posting their trips to book a bid that suits them.
However, if a Bid has caught your attention, we would strongly recommend booking it as quickly as possible. Partnered Transport providers receive an important amount of trip requests. These trips can sometimes be for the same time slot, which can force some Transport Providers to cancel the Bid you have your eye on.
Our suggestion: Book as quickly as possible!