The yellow initial tile for the English Channel has no track. In order to connect with it via track, a green tile needs to be laid?
I don't see that it admits of any other interpretation; no track, no trains.
France's 0 value in the yellow phase also means there would be no reason to run a train there. 
Here's a question: can private #5 be used to place a token in the yellow English Channel? It has a token space printed but rule 5.4.4 only details the token spots in green, brown, and grey. (If private #5 can be so used, the owning company misses out on the upgrade to green, which I don't think is the intention...)
 since routes can end at towns in 1822, there isn't an edge case where you're trying to add Folkestone to a route but then need a city to finish at.