The route from Kaohsiung to Houlong is primarily serviced by the Taiwan Railways Administration. The main train types operating on this route include the Local Express and the Limited Express services. The Limited Express trains, such as the Tze-Chiang, can reach speeds of up to 130 km/h (81 mph) and typically cover the journey in about 2 hours. The Local Express trains, on the other hand, have a more leisurely pace with speeds ranging from 60 to 90 km/h (37 to 56 mph) and take approximately 2.5 to 3 hours depending on the number of stops.
The Limited Express, while slightly more expensive, offers a faster travel option with fewer stops while providing amenities such as air-conditioned coaches and comfortable seating. Additionally, the Local Express trains cater to a larger portion of smaller stations, making it suitable for travelers looking to explore more regions along the way. Overall, for passengers prioritizing speed, the Limited Express train is the recommended choice, whereas the Local Express might better suit those who wish to experience more of the local environment.