Applying GIS and Survey Data to Transportation Demand Management. Richard Hsu, M.S. Carina Anttila-Suarez, Ph.D.

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1 Applying GIS and Survey Data to Transportation Demand Management Richard Hsu, M.S. Carina Anttila-Suarez, Ph.D.

2 Skyline College at a Glance: Campus population: 16,000+ students 500+ employees Campus environment: 111 acres Suburban neighborhood Next to GGNRA Transit services: SamTrans BART Caltrain No on-campus housing

111 acres Suburban neighborhood Next to GGNRA

3 Skyline College Transportation Study Motivation Explore feasibility of a campus shuttle to closest BART station Relieve demand for on-campus parking during peak hours Reduce GHG emissions from single-occupancy vehicles (SOVs) Methodology Use survey sampling to reveal transportation mode usage, identify prevailing attitudes on alternative transportation, and determine awareness of alternative transportation resources Use geographic information systems to determine residential commute origins, identify service area coverage of existing transit infrastructure, and reveal geographic trends among survey responses

identify prevailing attitudes on alternative transportation, and determine awareness of alternative transportation resources Use geographic information

4 Skyline College Transportation Study Transportation Survey 16 questions Online survey administered over a 4-week period to employees via an link Paper survey administered to students in class selected from a stratified sample of 50 on-campus courses Sample size: 837 students (5.2%) 168 employees (30.8%)

link Paper survey administered to students in class selected from a

5 Residence and Commute Origin Residential addresses convey information on commutes from home, while the survey data reflects commutes from work or home. Overall, the sample of survey respondents were representative of the overall campus population. Location of Campus Population Residences Area of Residence Number of Residents % of Campus Population San Mateo County 11, % North San Mateo County 9, % Rest of San Mateo County 2, % City & County of San Francisco 3, % Rest of San Francisco Bay Area % Unknown/Outside of SF Bay Area % Total 16, % Location of Survey Respondents Commute Origins Area of Commute Origin Number of Respondents % of Survey Respondents San Mateo County % North San Mateo County % Rest of San Mateo County % City & County of San Francisco % Rest of San Francisco Bay Area % Unknown % Total 1, %

Location of Campus Population Residences Area of Residence Number of Residents % of Campus Population San Mateo County 11,994 72.0% North San Mateo County 9,590 57.

6 Student Residence and Respondent Commute Origin

7 Employee Residence and Respondent Commute Origin

8 Top three student responses to: How do you usually travel to Skyline College? The map on the left shows the highest response within each ZIP code, the middle map shows next highest response, and so forth.

9 Top three student responses to: If you do not use public transportation for travel to Skyline College, what are the main reasons why?

10 Top three student responses to: If you usually drive alone to Skyline College, what would encourage you to take public transportation to campus?

11 Top three student responses to: If you usually drive alone to Skyline College, why don t you carpool or vanpool?

12 Top three student responses to: If you usually drive alone to Skyline College, what would encourage you to join a carpool or vanpool to campus?

13 Residential Population Density of Students and Employees

14 Residential Population Density of Students and Employees

15 What is Service Area? A transit station s service area is the walkable area from the station into the surrounding community (and vice versa) within a specified amount of time using publicly accessible roadways. For example, a transit station s 5- minute service area encompasses all locations that can be walked to within 5 minutes (a quarter-mile walk) using the network of streets leading away from the station.

(and vice versa) within a specified amount of time using publicly accessible roadways.

16 SamTrans service area within S.F. and North San Mateo County

17 SamTrans direct service area within North San Mateo County

18 BART service area within S.F. and North San Mateo County

19 Caltrain service area within S.F. and North San Mateo County

20 Proportion of Student and Employee Residences within Transit Service Areas Service Area Transit Service 5-minute 10-minute 15-minute 20-minute SamTrans (all routes) 52.4% 70.7% SamTrans (direct routes) 12.9% 23.7% BART 1.4% 5.4% 11.7% 20.4% Caltrain 0.8% 6.0% 8.5% 13.0% 15- and 20-minute service areas were included for BART and Caltrain based on the assumption that people are willing to walk farther to transit if they live farther away and/or if they are using faster transit (since BART/Caltrain trains are faster vehicles than SamTrans buses).

21 Summary of Findings 75% of survey respondents drive alone (SOVs) to campus while only 18% take SamTrans. Less than 5% take BART. 38% of SOV respondents would be encouraged to take public transportation if discounted transit passes were available, the second highest response after more direct bus service (48%). A direct shuttle between campus and local BART stations would encourage 23% of SOV respondents to take transit (fourth highest response). 71% of the campus population live within a 10-minute walk of any SamTrans bus stop, and 24% live within a 10-minute walk of a SamTrans bus stop along a direct service route. Only 6% live within a 10-minute walk of any BART station.

22 Conclusions and Recommendations Survey and spatial analyses suggest that collaborating with SamTrans to improve bus service and offer discounted fares (e.g. U-Pass) would affect a much larger proportion of the campus population and encourage greater use of transit than offering campus transit shuttles to local BART stations. Proposed campus shuttle to the closest BART station (San Bruno BART) would only have a fraction of the impact of offering shuttles to the four local BART stations within North County. The proposed shuttle also duplicates service of an existing SamTrans bus route. Financial incentives (e.g. cheaper parking permits) seem to be the best incentive to encourage carpooling, but ride-matching difficulties appear to be the biggest barrier.

23 Next Steps

24 Questions? Richard Hsu, M.S. Carina Anttila-Suarez, Ph.D.

Survey of San Francisco Likely November 2014 Voters Regarding Attitudes on Employee Shuttles

Photo by Basil D Soufi / CC BY Survey of San Francisco Likely November 2014 Voters Regarding Attitudes on Employee Shuttles Prepared for Bay Area Council March 2014 Methodology Telephone survey of Likely