1921年,英国二百多家铁路公司合并为四大私铁。1947年工党政府又将四大私铁的资产,移交给公共事业协会管理,成为英国国有铁路。英国国有铁路收入为支出的71.2%。荷兰国铁采取国家全部出资的股份公司的形态,它的收入为支出的55.5%。法国在1937年收买私铁,由国家出资51%,私铁出资49%,组成了“公私混合公司”, In 1921, more than 200 British railway companies merged into four major private railways. In 1947, the Labor government handed over the assets of the four major private railways to the Public Utilities Association and became the British state-owned railway. Britain’s state-owned railway revenues accounted for 71.2% of expenditures. DRC takes the form of a fully state-owned joint-stock company, which generates 55.5% of its revenue. France bought private railways in 1937, with 51% of the state’s investment and 49% of the private railroad’s investment, forming a “public-private mixed company”