Since 2005 public buses in Mauritius have been free of charge for students, people with disabilities and senior citizens. There is currently a railway project under construction in Mauritius, former privately owned industrial railways having been abandoned. The harbour of Port Louis handles international trade as well as a cruise terminal. The sole international airport for civil aviation is Sir Seewoosagur Ramgoolam International Airport, which also serves as the home operating base for the national airline Air Mauritius; the airport authority inaugurated a new passenger terminal in September 2013. Another airport is the Sir Gaëtan Duval Airport in Rodrigues. Mauritius has a serious traffic problem due to the high number of road users, particularly car drivers. To solve the traffic congestion issue, the government has embarked on the Metro Express project. The line starts from Port Louis and will go to Curepipe when completed. The first phase of the project was completed in January 2020 while the second phase will be completed in 2021.