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In this paper, we make two points about bottom-up approaches to climate policy. First, we argue that it is more productive to work with a small group of countries to establish the basis of a global climate regime than tackling the issue with all countries, as in the United Nations Framework Convention on Climate Change (UNFCCC). Secondly, we argue that negotiators should also work explicitly to encourage the development and deployment of clean technologies as a way to reduce future emissions, and suggest how this might be achieved. [ABSTRACT FROM AUTHOR]

Transport generates a large and growing component of global greenhouse gas emissions contributing to climate change. Effective transport emissions reduction policies are needed in order to reach a climate target well below 2 ∘C. Representations of technology evolution in current integrated assessment models (IAM) make use of systems optimisations that may not always provide sufficient insight on consumer response to realistic policy packages for extensive use in policy-making. Here, we introduce FTT: transport, an evolutionary technology diffusion simulation model for road transport technology, as an IAM sub-component, which features sufficiently realistic features of consumers and of existing technological trajectories that enables to simulate the impact of detailed climate policies in private passenger road transport. Integrated to the simulation-based macroeconometric IAM E3ME-FTT, a plausible scenario of transport decarbonisation is given, defined by a detailed transport policy package, that reaches sufficient emissions reductions to achieve the 2 ∘C target of the Paris Agreement. [ABSTRACT FROM AUTHOR]