Data generated by travel modes can inform planners and regulators in improving the transportation system, but private mobility companies often restrict their access for concerns about privacy and competition.
Last month, the Paris-based International Energy Agency released its annual "Global Energy & CO2 Status Report." Energy consumption grew 2.3 percent with fossil fuels accounting for 70 percent on the increase. CO2 emissions jumped 1.7 percent.
The sobering news comes from the Rhodium Group, a research firm that tracks CO2 emissions. The preliminary estimate is the third in two months to show an increase in 2018, attributing it to an improved economy and Trump's regulation rollbacks.
The report from the Global Carbon Project, an international group of scientists who track greenhouse gas emissions, comes as a surprise as emissions had been relatively flat for the last four years. Global emissions this year will increase 2.7%.
For the first time, electricity generated from burning natural gas will surpass coal, largely due to fracking of shale. While that means that carbon dioxide emissions will continue to drop, it also means that methane emissions will increase.