It contains data objects that provide commands for lane & speed (l&s) settings to be imposed (or a current setting cleared) on one or more parts of the urban road network. The request will comprise details of the actual speed indications that are to be displayed, plus the identity of the locations at which the display(s) are to appear. They will provide indications that will enable drivers to change the speed of their vehicles in an orderly and safe manner, without causing any hazard to other vehicles, or other types of road users.<br/>