Traveling from Hiroshima to Aioi can be accomplished using the Sanyo Shinkansen service, particularly the Kodama and Hikari trains. The Kodama service, which is a slower option, reaches speeds up to 150 km/h (93 mph) and makes frequent stops, taking approximately 1 hour and 30 minutes to cover the distance between the two cities. On the other hand, the Hikari service, a faster choice, operates at speeds of up to 285 km/h (177 mph) but does not stop at all stations, resulting in a journey time of around 1 hour.
The choice between these two trains depends on passengers' preferences for speed and convenience. Both services feature comfortable seating and facilities, making them suitable for both business and leisure travelers. The Hikari is preferable for those prioritizing reduced travel time, while the Kodama is beneficial for those who may want access to smaller stations or local attractions along the route.