[HTML][HTML] Modelling car fleet renewal in Finland: A model and development speed-based scenarios

R Viri, J Mäkinen, H Liimatainen - Transport policy, 2021 - Elsevier
The development of car fleet plays major part when considering the emissions resulted from
passenger car use. Globally, there are many different methods and models for car fleet …

[HTML][HTML] The impact of modal shift on passenger car CO2 emissions in Tampere region

R Viri, J Mäkinen - Case studies on transport policy, 2023 - Elsevier
Reducing emissions from transport is an important part of climate change mitigation. In Finland,
Tampere region has set ambitious modal shift targets to reduce transport emissions. This …

[HTML][HTML] The effects of COVID-19 epidemic on public transport ridership and frequencies. A case study from Tampere, Finland

H Tiikkaja, R Viri - Transportation Research Interdisciplinary Perspectives, 2021 - Elsevier
The COVID-19 epidemic has created unforeseen effects in public transport in cities around
the world, including Tampere, where a 70% decrease in the number of passengers occurred …

[HTML][HTML] Charging powers of the electric vehicle fleet: Evolution and implications at commercial charging sites

T Simolin, K Rauma, R Viri, J Mäkinen, A Rautiainen… - Applied energy, 2021 - Elsevier
Electric vehicle (EV) charging is widely studied in the scientific literature. However, there
seems to be a notable research gap regarding the charging power limitations of the on-board …

[HTML][HTML] The effects of mobility as a service and autonomous vehicles on people's willingness to own a car in the future

T Liljamo, H Liimatainen, M Pöllänen, R Viri - Sustainability, 2021 - mdpi.com
Car ownership is one of the key factors affecting travel behaviour and thus also essential in
terms of sustainable mobility. This study examines car ownership and how people’s …

The costs of mobility: a data-based method for estimating cost and emissions per kilometre in Finland

R Viri, H Tiikkaja - Transportation Research Procedia, 2025 - Elsevier
Transport is major source of CO 2 emissions and therefore, there are many different actions
and changes in the sector to decrease the emissions. Some of these affect directly to mobility …

[HTML][HTML] Effect of policies to accelerate the adoption of battery electric vehicles in Finland—A Delphi study

S Nair, R Viri, J Mäkinen, M Pöllänen… - Future …, 2024 - mdpi.com
Greenhouse gas (GHG) emissions from transport contribute significantly to climate change.
Some of the transport policies with the greatest potential to mitigate climate change are …

Using GTFS-data to calculate the roadwork caused delays on public transport network

R Viri, M Örmä - Transportation Research Procedia, 2025 - Elsevier
The reliability of public transport is a significant reason whether people choose it over other
transport modes. Roadworks, ie, mandatory road maintenance, can cause delays on vehicle …

Annual Mileage Development Over Passenger Car Age and Driving Power in Finland

R Viri, J Mäkinen - Transport Research Arena Conference, 2024 - Springer
This study investigates how car age, driving power and area type affect the average annual
mileage of passenger cars in Finland. For the analysis, data from the Finnish car fleet …

Ecological sufficiency in climate policy: Towards policies for recomposing consumption

…, M Saarinen, K Regina, T Heinonen, R Viri… - Futura, 2020 - researchportal.helsinki.fi
According to the Paris Agreement, global warming is to be limited to well below 2 degrees.
The largely prevailing emission reduction approach has been to improve ecological efficiency …