# Fundamentals of Transportation/Mode Choice/Homework

## Homework[edit]

1. Identify five independent variables that you believe affect mode choice. Pose hypotheses about how each variable affects share of travel by each mode.

2. Explain Independence from Irrelevant Alternatives

3. You are given the following mode choice model.

Where: travel time between i and j by mode m

dummy variable (alternative specific constant) for transit

dummy variable (alternative specific constant) for walking

Here auto is assumed the baseline mode.

The auto travel time between zones (in minutes) is given by the following matrix:

Origin \ Destination | To Dakotopolis | To New Fargo |
---|---|---|

From Dakotopolis | 5 | 9 |

From New Fargo | 9 | 4 |

The transit travel time between zones (in minutes) is given by the following matrix:

Origin \ Destination | To Dakotopolis | To New Fargo |
---|---|---|

From Dakotopolis | 10 | 15 |

From New Fargo | 15 | 8 |

The walk travel time between zones (in minutes) is given by the following matrix:

Origin \ Destination | To Dakotopolis | To New Fargo |
---|---|---|

From Dakotopolis | 10 | 30 |

From New Fargo | 30 | 10 |

Using a logit model, what is the probability of a traveler taking transit?