However, the Queensland Government also have another project on their website called the Brisbane Inner City Metro.
Within the CBD this line is planned to run along a similar route to Cross River Rail 2, but doesn't appear to connect to the existing rail network. A self-contained Inner City Metro would not solve Brisbane's biggest transport issue, which is to transport commuters from the suburban urban sprawl into the inner-city. Yes, it may be possible for passengers to change from the Queensland Rail network onto the Inner City Metro at locations such as Toowong, but this wouldn't help if the Ipswich/Springfield Line is full to capacity before the trains get to Toowong! There is some argument for metros allowing for closer spaced stations that heavy rail, but in reality few modern metros are built with stations spaced closer than 800-1000m anyway due to the huge cost of station construction. A heavy metro station built to 9-car trains, and with entrances at both ends could cover the area served by 2 metro stations. It would also be a huge waste of money to build both Cross River Rail 2 and Brisbane Inner City Metro along similar alignments.
BrizCommuter can see little argument for the Brisbane Inner City Metro as currently planned. Cross River Rail 2 would kill two birds with one stone as it would cater for suburb to inner-city and inner-city to inner-city journeys. Many other major cities already run suburban heavy rail services through the inner-city in tunnels. Paris' RER system took heavy rail suburban rail lines that previously terminated at rail termini on the edge of the city, and connected them via inner city rail tunnels. Tokyo Metro offers reciprocal through services where suburban rail services can (instead of terminating) join a metro line, run through the inner-city along the metro tracks, and then in some cases continue onto another suburban rail line at the other end. London is planning CrossRail, which will connect suburban rail lines on opposite sides of London. Munich, Hamburg, and Berlin S-Bahns also allow heavy rail suburban lines to run "metro like" services through the inner-city.
If the Trouts Road Line ever sees the light of day (it has been seen in at least one Queensland Government document), it could change the future routing of Cross River Rail 2, which could then allow for the Brisbane Inner City Metro. Other routing options for Cross River Rail 2 also need to be considered, in particular serving the University of Queensland. BrizCommuter hopes that any future decisions concerning Brisbane's rail network are based on accurate independent research.