All tram routes operate entirely within zone 1. However, routes 75, 86 and 109 enter the zone 1/2 overlap at the very end of their outer-suburban routes. If a passenger begins and ends their journey completely within the zone 1/2 overlap, they can touch off to receive a slightly lower fare. If any part of the journey is within Zone 1, there is no need for the passenger to touch off as the fare is automatically calculated. Touching off on a zone 1 journey is both redundant and may cause delay or inconvenience to other passengers and the tram networks 'on time' performance. If passengers only travel in the free tram zone, there is no need to touch on their myki.