3.12 - Sensitivity analysis
- 3.1- Overview
- 3.2 - Method of evaluation
- 3.3 - Scope of analysis
- 3.4 - Stages of analysis
- 3.5 - Do minimum
- 3.6 - Travel impacts
- 3.7 - Costs of TDM programmes
- 3.8 - Benefits of TDM programmes
- 3.9 - Period of analysis
- 3.10 - Cost benefit evaluation
- 3.11 - Alternatives and options
- 3.12 - Sensitivity analysis
- 3.13 - Monitoring
- 3.14 - Selecting the appropriate evaluation method
- 3.15 - References
3.12 - Sensitivity analysis
Possible significant factors
Inputs to TDM evaluations that should be considered for sensitivity testing include:
- demand estimates, refer to chapter 4
- funding gap, refer to chapter 6
- major contributors to benefits
- commencement of the proposal.
Major contributors to benefits
Major contributors to benefits critical to the outcome of the evaluation are likely to include:
- road traffic volumes, particularly model results, growth rates and the assessment of generated traffic
- transport service patronage or facility users
- maximum user charges estimated from consumer surveys.
For each significant factor the following shall be listed:
- the assumptions and estimates on which the evaluation has been based
- an upper and lower bound of the range of the estimate
- the resultant BCR at the upper and lower bound of each estimate.
