Twenty-one Dublin bus routes will be rerouted from Sunday to facilitate the new cross-city Luas lines.

Buses will no longer be able to turn right at the bottom of Dawson Street because of the new rail tracks. The routes affected are 7b/d, 11, 25x, 32x, 37, 38/a/b/d, 39/a, 41x, 44, 46a, 61, 66x, 67x, 70, 84x, 116, 118 and 145.

Routes 7b/d, 25x, 32x, 37, 39/a, 41x, 44, 61, 66x, 67x, 70, 84x, 116, 118 and 145 will turn right on to Molesworth Street, Kildare Street, South Leinster Street and back on to their normal route.

The routes 11, 38/a/b/d and 46a/e will turn left on to Nassau Street, Grafton Street, Westmoreland Street and back on to their normal route.

There will also be a number of new stops to facilitate the changes.

Dublin Bus says the changes will actually save commuters time by shortening their routes.

A statement from the company said: “Don’t fret….it’s the good kind of change, the time saving, two minutes longer in the shower, get to work that little bit earlier kind of change!”

The changes can be accessed here.