Traveling from Higashihiroshima to Aioi offers two primary services on the Sanyo Shinkansen line: the Hikari and the Kodama trains. The Hikari service, known for its speed, can reach up to 285 km/h (177 mph) and covers the distance in approximately 1 hour and 15 minutes, making fewer stops at major stations like Okayama. Alternatively, the Kodama service operates at a slower pace, averaging around 120 km/h (75 mph) and taking about 1 hour and 45 minutes, as it stops at every station along the route.
Both options feature standard and Green class seating to cater to different preferences for comfort. The Hikari train is suited for those prioritizing a quicker journey, while the Kodama service provides the chance to explore more local areas, albeit at the expense of additional travel time. Onboard amenities such as spacious seating and refreshments are available on both train types, ensuring a satisfying journey.