鉄道について

回答日：2023-08-19

先に書いたように、パス枠のあるのはフランスの鉄道会社のみ。

www.eurail.com
ICE High-Speed Trains
Reservations
Reservations for ICE trains
Reservations on regular ICE high-speed trains are optional.

Exceptions:
Reservations are compulsory on the ICE from Frankfurt to Amsterdam between June 17th till August 18th
Reservations are compulsory on the ICE from Frankfurt to Paris and Stuttgart to Paris.

先に示したICE 9572なら、
Stuttgart Hbf ab 14:52 Gl.7
Karlsruhe Hbf an 15:30 ab 15:32 Gl.7
Strasbourg an 16:13 ab 16:19
Paris Est an 18:05
なので、EUrailの下の場合の例外となります。

How to make reservations
You can reserve your seat on the ICE in the following ways:
Online through the DB website
Through our Reservation Service
At the train station. Keep in mind that trains can become full during busy times. Especially during summer season to international destinations, such as Amsterdam and Basel.
Domestic journeys only - At the DB ticket machines at the station
とありますが、現時点で、reiseauskunft.bahn.deでは、Karlsruhe Hbf-PARISのICEは、Nur Sit Platz
にしても、TVGは勿論、ICEもReservierung nicht möglichReservierung nicht möglichとなっています。オンラインでの予約のみは不可なので、一番上の方法はあくまで国内のみです。

Reservation fees

Mandatory reservations for ICE trains to and from Paris
2nd class: €19
1st class: €30

これに対し、TGV high-speed train
Reservations

How to make reservations for the TGV
You can reserve your seat on the TGV in the following ways:
Through the Rail Planner App
Through our Reservations Service
Through B-Europe for the Brussels to Marne-la-Vallée and Chessy route.

Please note that international TGV trains offer a limited number of seats for Eurail pass holders. Once these seats are taken you will need to purchase a full-fare ticket. We advise you to reserve the trains as far in advance as possible. You can start making reservations up to 3 months in advance.

とちゃんと区別しています。要するに、DBは枠を設けておらず、金さえ払ってくれれば（あくまで空席があれば）乗せてくれるのです。

先にそう書いたと思うのですが・・・・。