Hall, Dale; Nikita Pavlenko, and Nic Lutsey 2018 Beyond road vehicles: Survey of zero-emission technology options across the transport sector

Electrification continues to make strides in the passenger vehicle market, representing more than 1% of global sales and up to 40% of sales in leading markets in 2017. Enabled by falling battery prices and increasing invest- ment from traditional and new vehicle manufacturers, this trend represents an opportunity to dramatically reduce greenhouse gas emissions in the trans- port sector. Policymakers continue to encourage a shift toward zero-emis- sion vehicles through CO regulations,

Although road vehicles currently represent about 70% of transport green- house gas emissions, other forms of transport—including aviation, maritime, and off-road vehicles—are substantial emissions sources and are expected to see continued growth in the coming years. 

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