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Evidence map

Adoption policy: what the evidence base looks like

14 publications, 0 of them trials and 0 syntheses. This page describes the shape of that literature rather than summarising its conclusions.

Updated 4 min read 14 citations

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What the evidence on adoption policy is made of Of 14 publications on this topic, the breakdown by study type: 14 other. 14other (14)
14 publications, by study type. Volume is not strength — the same count can be a settled question or a pile of commentary, and which one it is depends almost entirely on this breakdown. Harvested from PubMed and Crossref; publication type as recorded by the source.

What this literature is made of

A reasonable volume of literature, but weighted towards reviews and observational work rather than trials. That is enough to describe a phenomenon and rarely enough to establish that an intervention works.

The distinction that matters most is between synthesis and primary research. A meta-analysis pools trials and is the closest thing to a settled answer a field produces. A narrative review is one group's reading of the same material and can be selective without being dishonest. Counting them together, which most citation counts do, obscures exactly the thing you want to know.

When the adoption policy literature was published Publication years for the 14 papers on this topic, grouped into bands from before 2015 through to 2023 onwards. 2023 onwards6 papers2020-20224 papers2015-20194 papers
Still active. The most recent paper here is from 2026, so this is a field where an answer written today may not hold for long. Publication years as recorded by PubMed and Crossref.

How this page is built

Everything above is computed from the citations this site harvested from PubMed and Crossref, not written by hand. When the weekly harvest finds a new paper on this topic, these counts change and the characterisation changes with them. That is the point: a hand-written claim about how strong an evidence base is starts decaying the day it is written.

Publication type is taken as the source records it. That is imperfect — journals label inconsistently, and a paper indexed as a "review" may be a systematic one — so treat the bands as approximate. They are accurate enough to distinguish a trial literature from a commentary literature, which is the distinction that matters.

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The strongest work on this topic

Ordered by study design first, then recency. The full set is listed in the references below.

  1. Electric Vehicle Adoption: A Comprehensive Systematic Review of Technological, Environmental, Organizational and Policy Impacts — Zaino R, Ahmed V, Alhammadi A et al., 2024, journal article
  2. Network Externality and Subsidy Structure in Two-Sided Markets: Evidence from Electric Vehicle Incentives — Springel K, 2021, journal article
  3. Electric vehicle adoption: An analysis of best practice and pitfalls for policy making from experiences of Europe and the US — Broadbent G, Drozdzewski D, Metternicht G, 2017, journal article
  4. Modeling Electric Vehicle Adoption in Thailand: The Impact of Ecosystem and Policy Support via Perceived Value and Charging Anxiety — Suvittawat A, Suvittawat N, 2026, journal article
  5. Electric Vehicle Adoption in Egypt: A Review of Feasibility, Challenges, and Policy Directions — Awad H, De Santis M, Bayoumi E, 2025, journal article
  6. Policy Forum: Demand and Supply Policies for Electric Vehicle Adoption—A Comparison of Norway and Canada — Epelbaum N, Jackson Farrell P, Gandhi D et al., 2025, journal article
  7. Comparison of SVM & Naïve Bayes Methods in Sentiment Analysis of Electric Vehicle Subsidy Policy Based on X Data — Wiguna I, Waas D, Wiguna I et al., 2024, journal article
  8. Twitter Sentiment Analysis of Electric Vehicle Subsidy Policy using Naïve Bayes Algorithm — Wicaksono A, 2023, journal article
  9. Energy and Environmental Policy Trends: The accelerating pace of electric vehicle adoption — Hastings-Simon S, 2022, journal article
  10. Alternative Incentive Policies against Purchase Subsidy Decrease for Battery Electric Vehicle (BEV) Adoption — Lu T, Yao E, Jin F et al., 2020, journal article
How much research is there on adoption policy?
14 publications are indexed here, of which 0 are trials and 0 are syntheses.
Does more research mean a stronger conclusion?
No. Composition matters more than volume — five randomised trials support a claim far better than fifty commentaries, and citation counts do not distinguish between them.
How current is this?
The most recent paper indexed here is from 2026. The set is refreshed weekly from PubMed and Crossref.
Why does this page not tell me the answer?
Because summarising a literature into a conclusion requires reading it, and doing that automatically is how confident nonsense gets published. This page tells you how much weight a conclusion could bear; the articles on this site do the interpreting.

References

Every citation below links to the original peer-reviewed record on PubMed or via DOI. Nothing here is a substitute for medical advice.

  1. Electric Vehicle Adoption: A Comprehensive Systematic Review of Technological, Environmental, Organizational and Policy Impacts Zaino R, Ahmed V, Alhammadi A, et al. · World Electric Vehicle Journal · 2024 · Journal article DOI
  2. Network Externality and Subsidy Structure in Two-Sided Markets: Evidence from Electric Vehicle Incentives Springel K · American Economic Journal: Economic Policy · 2021 · Journal article DOI
  3. Electric vehicle adoption: An analysis of best practice and pitfalls for policy making from experiences of Europe and the US Broadbent G, Drozdzewski D, Metternicht G · Geography Compass · 2017 · Journal article DOI
  4. Modeling Electric Vehicle Adoption in Thailand: The Impact of Ecosystem and Policy Support via Perceived Value and Charging Anxiety Suvittawat A, Suvittawat N · World Electric Vehicle Journal · 2026 · Journal article DOI
  5. Policy Forum: Demand and Supply Policies for Electric Vehicle Adoption—A Comparison of Norway and Canada Epelbaum N, Jackson Farrell P, Gandhi D, et al. · Canadian Tax Journal/Revue fiscale canadienne · 2025 · Journal article DOI
  6. Electric Vehicle Adoption in Egypt: A Review of Feasibility, Challenges, and Policy Directions Awad H, De Santis M, Bayoumi E · World Electric Vehicle Journal · 2025 · Journal article DOI
  7. Comparison of SVM & Naïve Bayes Methods in Sentiment Analysis of Electric Vehicle Subsidy Policy Based on X Data Wiguna I, Waas D, Wiguna I, et al. · Journal of Engineering and Scientific Research · 2024 · Journal article DOI
  8. Twitter Sentiment Analysis of Electric Vehicle Subsidy Policy using Naïve Bayes Algorithm Wicaksono A · Journal of Statistical Methods and Data Science · 2023 · Journal article DOI
  9. Energy and Environmental Policy Trends: The accelerating pace of electric vehicle adoption Hastings-Simon S · The School of Public Policy Publications · 2022 · Journal article DOI
  10. A First Look at Ontario’s Electric Vehicle Incentive Program: Who Are Ontario’s Green Drivers? Erutku C · Canadian Public Policy · 2020 · Journal article DOI
  11. Alternative Incentive Policies against Purchase Subsidy Decrease for Battery Electric Vehicle (BEV) Adoption Lu T, Yao E, Jin F, et al. · Energies · 2020 · Journal article DOI
  12. The Impact of Different Incentive Policies on Hybrid Electric Vehicle Demand and Price: An International Comparison Whitehead J, Washington S, Franklin J · World Electric Vehicle Journal · 2019 · Journal article DOI
  13. Adoption of Electric Vehicles: Manufacturers' Incentive and Government Policy Shao J, Yang H, Zhang A · Journal of Transport Economics and Policy · 2019 · Journal article DOI
  14. Energy and Environmental Policy Trends: Will Electric Vehicle Rebates Spur Widespread Adoption? Shaffer B · The School of Public Policy Publications · 2019 · Journal article DOI