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Find out what is 'TDM' (Travel Demand Management) and what is'TSM' (Transportation Systems Management). Please also elaborate on the difference/similarity between TSM and TDM.

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TP5025 Find out what is 'TDM' (Travel Demand Management) and what is 'TSM' (Transportation Systems Management). Please also elaborate on the difference/similarity between TSM and TDM. In the 1960s, the solution adopted to reduce congestion is to build more roads to accommodate the increasing demand. However, this measure is found to be ineffective. In the 1970s, Transportation System Management (TSM) is introduced to look at ways to better manage the existing infrastructure. Transportation Demand Management implemented in the early 1980s serve the purpose of changing human behaviour to reduce traffic congestion. In this assignment, I will further elaborate on TSM and TDM. TSM strategies are generally used to maximize the efficiency of operations of the existing roadway system rather than increasing capacity. TSM approach to congestion mitigation seeks to identify improvements to existing facilities of an operational nature. These techniques are designed to improve traffic flow and safety through better management and operation of existing transportation facilities. Examples of TSM strategies include intersection improvements, street circulation changes, traffic signal improvements, signage, safety improvements and traffic/parking enforcement. ...read more.


Safety Improvements measures that can be implemented to improve safety for motorists, pedestrians, and bicyclists includes, use of reflectors in line marking, installing adequate streetlights, safe pedestrian crosswalks, turn prohibitions and enforcement of safe travel speeds. These improvements can potentially reduce collisions and conflicts among motorist and other road users. The enforcement of traffic and parking regulations is important to maintain safe and desired levels of traffic flow and parking. Restrictions imposed on road-side parking help to widen the lanes for motorist, especially on narrow driveways where space is already limited and during peak hours where heavy traffic is encountered. TDM measures are implemented to manage the travel demand component of the transportation system. The main focus is to reduce or maintain the level of vehicular traffic occurring during peak periods and to reduce the use of single occupant automobiles. TDM programs are typically aimed at employees and are generally administered by the employer (by a transportation coordinator) and overseen by a public agency. It is found that most successful applications of TDM have occurred in areas that have high employment and population densities. ...read more.


This has greatly helped to reduce the number of cars on the road in the case of Singapore. The main difference between TSM and TDM is that while TSM strategies focus on imposing (to some extend) physical changes to the infrastructure, TDM targets driver behavior, mode choice and employers to lower the traffic demands on the roads during the peak travel times. That is to say that while drivers have to conform to TSM measures, they have the choice of choosing whether or not they want to follow TDM measures. To an extent, the success of TDM measures is more dependent on individual motorist compared to success of TSM measures which rely more on the measures they implemented. The similarity between TSM and TDM is that these two policies serve the same aim of reducing traffic congestion, without utilising more lands to build more lanes and roads. Both these policies look at ways to maximise the efficiency of the existing infrastructure without the need for addition of new and costly system. Both TSM and TDM look into ways of providing a safer and more efficient transportation system for the public. ...read more.

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