Definition – Conventional traffic management schemes are typically road design interventions such as: one-way streets; junction redesign; banned turns and controls for on-street parking. These schemes have often been implemented with the objectives of increasing traffic capacity and safety, although further objectives can include the reallocation of road space to improve public transport and provision for cyclists and pedestrians. Traffic management falls within the infrastructure management category of potential SUMP measures.
Active Traffic Management (ATM) refers to the real-time management of road traffic through a combination of hard-shoulder running, incident detection, variable speed limits, queue warnings and other measures that are integrated to form a single system for a particular section of road or geographical area. Electronic signs are used to provide information to drivers. ATM is a type of Intelligent Transport System (ITS).
Relevance to SUMP – Traffic management refers to a series of measures that are used to manage the capacity of the transport system. The SUMP approach encourages a balanced development of all transport modes, an objective that can be supported through traffic management approaches such as the reallocation of road space for public transport, cycling and walking.
Source: KonSULT (online)