Changes in travel time and the load of road network, depending on the diversifcation of working hours: case study the Łódź Voivodeship, Poland MARTA BOROWSKA-STEFAŃSKA, MICHAŁ KOWALSKI, SZYMOn WIŚnIEWSKI GEOGRAFIE 125/2 (2020) University of Lodz, Faculty of Geographical Sciences, Institute of the Built Environment and Spatial Policy, Lodz, Poland; e-mail: marta.borowska@geo.uni.lodz.pl, michal.kowalski@geo. uni.lodz.pl, szymon.wisniewski@geo.uni.lodz.pl ABSTRACT Tis article has two major goals – a methodological and a research one. Te former is the development of a method enabling the prediction of the load of the road network, while the latter focuses on determining the infuence commuting has on the load of the road network and changes in travel time within the łódź Voivodeship. For the purposes of this study proprietary we used sofware based on a greedy algorithm. Te applied method in combination with the proprietary sofware returns good results when directions of trafc fows are under scrutiny. Te assumptions made herein do simplify reality, a simplifcation which stems from the quality of the available data and the calculating capacity of computers. On the other hand, the research goal has only been partially reached with regard to the method applied in the article. KEY WORDS transport geography – daily mobility – commuting to work – congestion – individual transport – łódź voivodeship – Poland BOROWSKA-STEFAŃSKA, M., KOWALSKI, M., WIŚNIEWSKI, S. (2020): Changes in travel time and the load of road network, depending on the diversifcation of working hours: case study the łódź Voivodeship, Poland. Geografe, 125, 2, 211–241. https://doi.org/10.37040/geografe2020125020211 Received August 2018, accepted January 2020. © Česká geografcká společnost, z. s., 2020