See https://openrailwaymap.org/ https://openrailwaymap.org/ and choose "Max speeds". Much of Western Europe has yellow, orange, red and purple lines, i.e. line

See https://openrailwaymap.org/ https://openrailwaymap.org/ and choose "Max speeds". Much of Western Europe has yellow, orange, red and purple lines, i.e. lines over 200km/h. Parts of Central and Eastern Europe do not, as you say.