Traveling from Shinagawa to Aioi can be accomplished using the Sanyo Shinkansen services. The fastest option available is the Nozomi Shinkansen, which operates at speeds of up to 300 km/h (186 mph). This service can cover the distance in approximately 3 hours, making it a top choice for travelers looking for efficiency. The Nozomi makes fewer stops and thus provides a quicker journey when compared to other services. Another option is the Hikari Shinkansen, which also travels on this route. While still fast, the Hikari takes about 3 hours and 30 minutes, as it stops at additional stations, such as Himeji and Kakogawa, allowing for connectivity to more destinations. Both Shinkansen types include standard and Green class seating options, providing a choice in comfort level. Passengers can enjoy amenities such as power outlets and onboard refreshments. For those prioritizing speed, the Nozomi is the best choice, whereas the Hikari allows for more regional sightseeing.