Road vehicle comprising an ignition system for the powertrain system comprising in turn a luminous device integral with the passenger compartment of the road vehicle and comprising a movable part configured to move between an off configuration and an on configuration; the luminous device comprising a display device configured to at least partially assume a first colour and a second colour; wherein the display device is configured to switch from the first colour to the second colour when the movable part switches from the off configuration to the on configuration and vice versa when the movable part switches from the on configuration to the off configuration.