Mike Reibel; Department of Geography and Anthropology, Ca Poly Pomona

1. Geospatial Analysis for SB375 Planning
Three main areas:
1. Optimize new housing mix to reduce vehicle miles
traveled (VMT)
2. Identify (and if possible rank*) suitable sites for transit-
oriented development (TOD)
3. Identify (and if possible rank*) potential mass transit
capital projects and/or service modifications
* Possible ranking meant to demonstrate a range of potential scenarios based
on different value streams
All three are best performed in GIS
Cal Poly Pomona
C G I S R Center for Geographic Information Science Research

2. Criteria for New Housing
• Determine optimal unit type mix (SFR vs. multi, TOD vs.
non-TOD multi, tenure mix, affordability) given new
housing allocations, CEQA breaks and local needs
• Select sites for optimal mix if available or else adjust mix
to that which is optimal given the geography of available
sites
Cal Poly Pomona
C G I S R Center for Geographic Information Science Research

3. Criteria for TOD Analysis
• Geography of existing mass transit
• Potential geographies of new mass transit under various
scenarios
• Specifications for suitable parcels, and availability
(subject to zoning variances if necessary)
• Demand for multifamily housing
• Economic feasibility of potential TOD developments
(including benefits of CEQA breaks)
Cal Poly Pomona
C G I S R Center for Geographic Information Science Research

4. Criteria for Transit
Planning Under SB375
• Similar to ordinary criteria for optimal service, except
• Consider service increases and/or modifications that
would be optimal under various scenarios of new TODs
and various increased transit funding scenarios
Cal Poly Pomona
C G I S R Center for Geographic Information Science Research

5. TODs are Key
Note that each of the three analyses are driven
by TOD decisions:
• How many TOD units to develop?
• What size TOD developments?
• What use mixes (housing, retail, office…)
• What specific parcels to target?
• Once these decisions are made, the parameters
for the other decisions shift accordingly
Cal Poly Pomona
C G I S R Center for Geographic Information Science Research

6. Housing Housing
TOD Plan Mix
Allocation
New New Housing
Existing Transit Site Selection
Transit Plan Plan
Cal Poly Pomona
C G I S R Center for Geographic Information Science Research

7. Data Requirements
• Geospatial Data: Other Data:
• Existing housing • Housing allocation
• Existing transit • VMT reduction targets
• Parcel data w/ availability • Housing mix preferences
• Zoning entitlements • Strategic decisions re:
• Geodemography of home & TOD and transit network
work commutes development
• Geography of services
(shopping etc.)
Cal Poly Pomona
C G I S R Center for Geographic Information Science Research

8. Scale of Analysis
• MPOs are charged with developing SB375 compliance
plans called sustainable communities strategies (STS),
but
• MPOs are answerable to their constituent local
governments
• Local governments should consider doing their own
SB375 planning so as to better lobby their MPOs for the
plans they like best
Cal Poly Pomona
C G I S R Center for Geographic Information Science Research

9. Planned Methods and Tools for
Strategic SB375 Planning
• The SB375 team at Cal Poly Pomona is
proposing to develop methods and tools with
support from the LTC during 2009-2010
• Methods = An analytic protocol specifying
models, threshold ranges and processes for the
analysis tasks
• Information = A Clearinghouse offering relevant
data in standardized formats and other useful
utilities
• Tools = A largely automated set of GIS routines
to implement the protocol and help local
governments with SB375 planning
Cal Poly Pomona
C G I S R Center for Geographic Information Science Research