An EastLink 'trip' is defined as a single trip on EastLink in one direction only.
You can exit and re-enter EastLink in the same trip, provided you keep going in the same direction, don't repeat any section, and complete your trip within 60 minutes.
A return trip equals two EastLink trips.
When using a tag or non-tag account, the toll cap applies to each trip on EastLink.
When using EastLink trip pass/es, one EastLink trip pass needs to be purchased for each trip on EastLink. A return trip therefore requires two trip passes.