An idea that originally grabbed my attention some months ago concerned the research being undertaken by the Safe Road Trains for the Environment (SATRE – funded by the EU) which investigated the prospect of automated vehicle motorway transport. This concept involved the creation of “
Road Trains” on Europe’s motorways that allowed vehicle drivers to join a convoy, manoeuvred by a lead driver, and stop manually automating their individual car and be directed by the operations of the lead driver. This would allow the convoy driver to partake in other activities such as reading or sleeping.
Road Trains are currently undergoing further research and testing but a European implementation of 2011 has been touted. The research, that has so far been conducted, highlights a number of advantages. Firstly, convoy drivers will benefit from an average 20% reduction in fuel use due to the slipstream effect often employed by professional cyclists. This will directly reduce the carbon intensity of the journey for a convoy vehicle. The first question that comes to me is will the lead driver be professionally employed to conduct this operation or simply another motorway driver who is also undertaking a long haul journey? My inclination is that it must be a professional driver and thus, keeping in mind the supposed fuel/carbon benefits, the Road Trains will have to average a convoy of at least 5 cars (if we assume the cars are comparable with fuel/carbon efficiency) to outweigh the operation of the lead vehicle.