The article An economic analysis of the proposed Dhaka–Chittagong Expressway in Bangladesh with the viewpoint of GHG emission reduction, written by Md. Zia Uddin and Takeshi Mizunoya, was originally published electronically on the publisher’s internet portal  on 26 September 2019 without open access. With the author(s)’ decision to opt for Open Choice the copyright of the article changed on 23 October 2019 to © The Author(s) 2019 and the article is forthwith distributed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.