The journey from Yamaguchi to Izumi is primarily served by the Sanyo Shinkansen trains, notably the Nozomi and Hikari services. The Nozomi Shinkansen operates rapidly, reaching speeds of up to 300 km/h (186 mph), and typically completes the trip in approximately 75 minutes, making limited stops at major stations along the way. In contrast, the Hikari Shinkansen covers the same route but takes around 90 minutes due to additional stops at places like Shin-Yamaguchi and Fukuyama, which cater to a broader range of passengers. Both train services feature Ordinary and Green class seating, providing travelers with space and comfort for the duration of their journey. For those prioritizing speed, the Nozomi is the best option; however, the Hikari presents a good alternative for those who wish to experience more regional stops. Onboard amenities such as refreshments and comfortable seating are available on both services.