Pekol (Transport Demand Modelling - Model Output & Errors) Flashcards
1
Q
What are the model outputs for the study area?
A
- PT patronage/mode share
- vehicle km of travel
- vehicle hours of travel/delay
- fuel consumption
- emissions
- crashes
2
Q
What are the model outputs for the Network Level?
A
- trips
- travel times and costs
3
Q
What are the model outputs for the Link level?
A
- volume
- speed and delay
- catchment analysis
- select link analysis
4
Q
What are the model outputs for the Service level?
A
- boardings and alightings
- Patronage profile
5
Q
What are model outputs used for?
A
- service planning
- infrastructure planning
- policy testing
- economic evaluation
- environmental assessment
- toll revenue for forecastings
6
Q
What are some common measurement errors?
A
- poor questionnaire wording
- network coding errors
7
Q
What are examples of sampling errors?
A
- data drawn from finite sample
- costly to reduce
8
Q
What are computational errors?
A
- models based on iterative procedures
- produce inexact solutions
9
Q
What are examples of specification errors?
A
- inclusion of irrelevant variables
- omission of relevant variable
10
Q
Are all models wrong?
A
Yes. But some are useful.
11
Q
Is robbie a model?
A
Should be
