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How to select interventions to solve transport challenges

Published: 07/10/2018

How to select interventions to solve transport challenges


Interventions

Once you have determined a strategy and desired outcomes, and analysed transport challenges, the next step is to identify the most appropriate instrument or intervention or package to address the problem.

Usually there is more than one way to address any transport challenge. Different options have different contributions, different key stakeholders, different resourcing and risk profiles.

A package of interventions may be the most appropriate, for example in addressing a road safety speeding problem, the most effective approach will be a combination of engineering (ensure posted speed limits are appropriate), education (road safety advertising), and enforcement (speed camera). See article: Emerging fourth ‘E’ in improving road safety

Instruments

The main types of instruments are:

  1. Advocacy - such as influencing behaviour through public education
  2. Collaboration - action in partnership with key stakeholders
  3. Economic - using taxpayer funds or taxing powers as an incentive
  4. Service Delivery - such as provision of public transport services
  5. Legal - using legislation and regulations.

Option Generation

One of the mistakes I often see is a focus on a preferred approach ..."this is how we have always done this ..." You should always consider alternative approaches, for example if we have a local traffic congestion problem:

  • minor infrastructure upgrade, such as provide a lane widening at an intersection where there is a bottleneck
  • non-infrastructure option, such as increasing parking pricing to deter traffic to a congested area
  • integrating transport and land use, such as encouraging mixed use development at a transport hub
  • use transport technology, such as variable speed limits to reduce traffic flow breakdown at critical times of the day
  • staging project implementation, particularly when all the funds are not currently available, and progress some lower cost components.

Choosing a Preferred Instrument

You should establish criteria for selecting a preferred intervention early on, before getting to option evaluation, as this allows a consistent approach to option comparison.

Criteria used can involve a combination of technical application and political practicality - some questions to help guide your choice of instrument include:

  • Efficient: will the instrument be cost-effective?
  • Effective: will the instrument get the job done?
  • Appropriate: is this a reasonable way of proceeding?
  • Equity: are the consequences likely to be fair and reasonable?
  • Doable: can the instrument be readily delivered?
  • Scalable: can the instrument adapt to changing circumstances (expanded, contracted)?

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Key Concepts

  • instruments are means to address transport challenges and achieve desired outcomes
  • there are five basic types: advocacy, collaboration, economic, delivery, legal
  • selecting the most appropriate package of instruments is difficult and involves trade-offs
  • criteria to evaluate instruments will involve a combination of technical application and political practicality.

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Want to learn more?

Click here to learn more about the TFi online course: Addressing Transport Challenges

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