The Department for Transport (the Department) is responsible for setting the strategic direction for the rail industry in England and Wales, including improving access to the railway for people with disabilities. It funds Network Rail to maintain and enhance rail infrastructure (£47.9 billion between 2019 and 2024). The Department also funds and oversees significant rail improvement programmes led by organisations created to manage these programmes, including Crossrail (Crossrail Limited) and High Speed Two (High Speed Two Limited). The Department contracts private sector companies to run train services through a system of franchising and, along with the Office of Rail and Road, holds these companies to account for their performance. The Department currently oversees 14 franchises. If franchises fail or are terminated, the Department can bring these back under government control until a new franchise can be let. In May 2018, timetable changes were introduced affecting 46% of train times across the rail network. The Department's management of the rail industry led to unacceptable disruption lasting for many weeks across the south-east and north of England. The Department is also responsible for overseeing and funding investment in the strategic road network, primarily through its Road Investment Strategy which is expected to cost £12.8 billion between 2015 and 2020.