KEY POINTS:
Bus shuttles will replace trains west of Henderson after tomorrow morning's peak period, from 9.30am, to allow Ontrack to complete its $45 million track duplication project to Swanson over the weekend.
Trains will also stop running between New Lynn and Waitakere on Saturday and on Monday.
Auckland Regional Transport Authority executive Mark Lambert said the work was an important part of the overall upgrade of the rail network and would ultimately reduce commuting times.
