A new study suggests that the integration of more driverless cars could lead to an "all day rush hour" in European cities. The research was conducted by Transport and Environment (T&E) and claims that the imminent commercial viability of driverless cars threatens to change the dynamics of road transport.Fleet News reports T&E's research also suggests that autonomous vehicles could increase greenhouse gases by 40% if they are not regulated.The report, Less is more: how to go from new to sustainable mobility, proposes options for urban planning that will result in a 60% reduction in vehicle activity and a 32% reduction in CO2 emissions, according to Fleet News. It says that the prospect of cars operated by computers and sensors rather than a human driver has implications for safety, parking, emissions, and congestion, as well as social factors such as human health and interaction.T&E’s new mobility expert, Yoann Le Petit, said, “Automation, electrification and sharing are three revolutions that can transform the way we move around. But whether this will prove to be a good thing for the environment and the liveability of our cities depends entirely on the choices governments, city authorities and mayors make.” Read the full report