A train ticket and an accessibility assistance request are separate matters in South Korea. Korail (including KTX services) and SR (SRT) provide staff support for passengers who need help boarding or leaving trains, including some wheelchair users and people with visual impairments.
The Korean government's Easy Law service describes requesting a boarding assistant 30 minutes before train use. In the documented process, a departure-station employee assists with boarding and hands over to onboard crew; at the destination, crew coordinate with station staff, who help the passenger toward the exit. Treat 30 minutes as the published request procedure, not a guarantee that personnel and equipment can be supplied instantly at every station. Contact the operator or station as early as practical.
Before traveling: (1) Identify whether each leg uses Korail or SR and check the departure and arrival stations. (2) Describe needed assistance, such as wheelchair boarding, platform access or visual guidance, and confirm the meeting point and request procedure. (3) Bring the ticket and required identification and arrive at the agreed time. (4) Ask separately about transfers if your itinerary involves multiple trains or stations.
The boarding assistance service is distinct from Korail's One-Call priority ticket booking and payment service. Check accessible seat availability, lifting or ramp equipment, companion arrangements, station facilities and applicable discounts directly with the train operator.