In order to strengthen Metrolinx’s role in regional co-ordination, access to additional revenue sources could be considered. Metrolinx is required to come up with an Investment Strategy by 2013 to fund the balance of the Regional Transportation Plan; various additional revenue sources could be considered as part of the development of this investment strategy. The coverage of urban public transport operating costs by fare box revenues varies greatly in OECD countries (Figure 2.4). The definition of cost categories is not uniform across countries, which makes comparisons risky, but in the majority of operations, cost-coverage levels vary between one-third and two-thirds.