1. High costs: The initial construction costs for maglev train infrastructure are significantly higher compared to traditional rail systems. This includes building guideways and installing magnetic levitation technology. The high costs have been a major deterrent for many countries and transit authorities.

While Maglev (magnetic levitation) trains offer incredible speeds and zero friction, several barriers prevent their widespread use in 2026. The most significant is the prohibitive infrastructure cost; unlike standard high-speed rail, Maglev cannot use existing tracks and requires an entirely new, specialized guideway system. For example, a single mile of Maglev track can cost three to five times more than traditional high-speed rail. Additionally, there is a lack of interoperability, meaning Maglev trains can never leave their dedicated tracks to serve older stations. In many countries, the incremental speed benefit over modern 350 km/h conventional trains doesn't justify the massive financial risk and decade-long construction timelines required.