What if Opal and Myki became one? It'd help more of us than you'd think
- Written by James Bushell, PhD Candidate and Research Associate, Institute of Transport and Logistics Studies, University of Sydney

Melburnians know Myki, Sydneysiders know Opal. These two electronic ticketing systems for public transport may be streets ahead of what they replaced, but are now decidedly old-fashioned compared with systems elsewhere in the world.
In the Netherlands you can buy a single card and use it on public transport anywhere in the country. In...