At the Neighborhood Level
- A doubling of the average household income across the station area results in a 17.7% decline in transit commuting
- A doubling of the intensity of jobs and people yields a 17.5% increase in transit commuting.
- A doubling in the share of nonwhites across the station area yields a 14.4% premium for transit commuting.
- Light rail/streetscar (vs bus) increases ridership by 22.5%
- Heavy rail/metro increases ridership by 30.6% over a bus.
- land-use mix is captured by the jobs-population balance index, which indicates that neighborhoods with more balanced land uses exhibit higher shares of transit commuting. A doubling of the values in this index yields a 23.2% increase in the mode share for transit commuting.
- Doubling the number of 4-way intersections increases transit commuting by 9%
- Doubling the walk-score increases transit commuting by 27.6%
- Doubling in transit service frequency yields an 18.6% bonus for the mode share of transit commuting.
- For a doubling in the share of Hispanic residents, transit commuting decreases by approximately 12%.
I feel that, given these numbers, it should be possible to do a benefit-cost analysis for all of these things....
At the Regional level:
- A doubling in the share of regional jobs and population within a half-mile of all stations in the region, also known as the network effect, yields a 38.6% increase in the mode share of transit commuting in station areas.
- For each doubling in annual travel delay, the average share of transit commuting increased by 91%-124%,