It would seem that the most efficient transport systems are the most expensive to build. So, there is an obvious trade-off.
Operationally, the most efficient are the most cost-effective or cost-efficient. That said, at the end of the day, from an operational standpoint, monetarily, the worth of the most cost-effective or efficient should be realized sooner than for those that are less so.
Take, for example, the world’s electrified railway systems. While initially dollar for dollar these are the most expensive in terms of their costs of construction, operating costs are usually lower compared with comparably built internal-combustion-driven railways. Operating costs center around
ScienceBlog.com has no paywalls, no sponsored content, and no agenda beyond getting the science right. Every story here is written to inform, not to impress an advertiser or push a point of view.
Good science journalism takes time — reading the papers, checking the claims, finding researchers who can put findings in context. We do that work because we think it matters.
If you find this site useful, consider supporting it with a donation. Even a few dollars a month helps keep the coverage independent and free for everyone.