Campus Units

Civil, Construction and Environmental Engineering, Institute for Transportation

Document Type


Publication Version

Accepted Manuscript

Publication Date


Journal or Book Title

Transportation in Developing Economies



First Page





Twitter, a microblogging service, has become a popular platform for people to express their views and opinions on different issues. A sentiment analysis of the tweets can help in understanding the public opinion on different government decisions. This paper used Twitter data to extract the sentiments of people during the Phase 1 and Phase 2 of the odd–even policy implemented by the Delhi government to curb the air pollution and improve traffic flow. In this study, we used four different lexicon-based approaches: Bing, Afinn, National Research Council emotion lexicon, and Deep Recursive Neural Network-based Natural Language Processing software (CoreNLP) to extract sentiments from tweets and thereby assess overall public opinions. The daily trend obtained for each phase was normalized with the number of tweets and then compared using the Granger causality test. The causality test results showed that the trends obtained during the two phases were significantly different from each other. In particular, public sentiments were found to mostly turn negative during the later stage of the Phase 2 which indicates fading away of the public enthusiasm and positiveness towards the policy during the later stages of the policy implementation.

Research Focus Area

Transportation Engineering


This is a post-peer-review, pre-copyedit version of an article published in Transportation in Developing Economies. The final authenticated version is available online at DOI: 10.1007/s40890-019-0074-8. Posted with permission.

Copyright Owner

Springer Nature Switzerland AG



File Format


Available for download on Sunday, March 29, 2020

Published Version