The Royal Society for the Prevention of Accidents (RoSPA) has recently published a Synthesis Report titled “Speed Limits” which focuses on the interventions regarding effective speed management. More precisely, new principles about setting speed limits are emerging, based on an assessment of the combined risk relating to the infrastructure, travel speeds, volume and mix of traffic by type (including vulnerable road users). Furthermore, signs are the primary way of communicating the speed limit of a road to drivers, with principles of effective speed limits signing been uniformity, consistency, simplicity, relevance and legibility.