stratified transit market segmentation
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Stratified Transit Market Segmentation . Multiple ways to Walk to Transit…. Multiple Transit Modes to Walk to. TRB Transportation Planning Applications Conference. Dan Tempesta. May 8, 2013. Marty Milkovits. Presentation Overview. Typical Market Segmentation - PowerPoint PPT PresentationTRANSCRIPT
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Transportation leadership you can trust.
Stratified Transit Market Segmentation
Multiple ways to Walk to Transit…. Multiple Transit Modes to Walk to
TRB Transportation Planning Applications Conference
Dan Tempesta
May 8, 2013
Marty Milkovits
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Presentation Overview
Typical Market Segmentation
Shortcomings of Typical Market Segmentation
Stratified Market Segmentation
3
Typical Market SegmentationAvailable Mode Choice Options– DA: Drive Alone,– SR: Shared Ride,– WB: Walk to Bus,– WP: Walk to Premium,– DB: Drive to Bus,– DP: Drive to Premium, and– NM: Non-motorized Modes (Walk and Bike)
Options Defined by Access Mode and Transit Mode
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Typical Market SegmentationMode Accessibility– DA: Drive Alone – Accessible to All TAZ– SR: Shared Ride – Accessible to All TAZ– WB: Walk to Bus – Accessible to TAZ with Transit– WP: Walk to Premium – Accessible to TAZ with
Transit– DB: Drive to Bus – Accessible to All TAZ– DP: Drive to Premium – Accessible to All TAZ
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Typical Market Segmentation
Availability/Accessibility
Auto Only
Prod
uctio
n M
ode
Acce
ssib
ility
Auto & Transit Auto Only
WP DBSR WB WP DB DP DA SR WBAuto & Transit
WP DB DP
Choice Options
DP
DA SR WB WP DB DP DA SR WB
Attraction Mode Accessibility
DA
Accessibility – Zone Based
Availability – Zone Pair Based
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ShortcomingsConsider a TAZ with 2 transit stops
TAZ
46% of the TAZ is walk accessible
54% of the TAZ is drive to transit accessible
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ShortcomingsNow add a new rail station
66% of the TAZ is walk accessible
34% of the TAZ is drive to transit accessible
TAZ
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Why is this a Shortcoming?
TAZ
The model will give 66% of the TAZ walk to transit accessibility
This overstates the accessibility of BOTH bus and rail
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Need Mode Specific Transit Buffers
Stratified Markets– Bus Accessible (Blue)– Rail Accessible (Red)– Bus & Rail Accessible (overlap), and– Auto Only Accessible (No Coverage)
Stratified Transit Market
TAZ
Accessible Mode
Percentage of Production TAZ
Bus/Auto 33%Rail/Auto 20%Bus/Rail/Auto 13%Auto Only 34%
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Implementation
The Devil is in the Details
Prod
uctio
n M
ode
Acce
ssib
ility
SR WB WP
Choice OptionsAuto & Bus Auto & Rail
Attraction Mode Accessibility
DB DP DA SR WB WPAuto & Bus DA SR WB WP
SR WB WP DB DP
Auto & Rail
Auto, Rail & Bus
DA
DA
Auto Only DA SR WB WP DB DP DA
SR WB WP DB DP DA SR WB
DB DP DA SR WB
Auto, Rail & Bus
DA SR WB WP DB DP
DB DP
DB DP
DP
DA SR WB WP DB DP
WP DB DP
WP DA SR WB WP DB DP
Auto Only
DA SR WB WP DB DP
DA SR WB WP DB DP
DA SR WB WP DB DP
DA SR WB WP DB DP
DA SR WB WP DBAuto Only
Prod
uctio
n M
ode
Acce
ssib
ility
Auto & Transit Auto Only
WP DBSR WB WP DB DP DA SR WBAuto & Transit
WP DB DP
Choice Options
DP
DA SR WB WP DB DP DA SR WB
Attraction Mode Accessibility
DA
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Stratified Transit Market
The Paths Matter
“Bus” Trips are transit trips that do not use Rail at all during their trip
“Rail” Trips use rail at some point during their trip
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Stratified Transit Market
Walk to Rail Restrictions
First Last First Last First Last First Last
Rail
Rail Rail Rail NA
Auto & Bus Auto & Rail Auto, Bus & Rail Auto Only
Auto Only NA NA NA NA NA NA
NA
Bus Bus/Rail
Walk to Premium Mode Restrictions
Prod
uctio
n M
ode
Acce
ssib
ility
Auto & Bus Bus Bus Bus
Attraction Mode Accessibility
NA NA
NA NA
NA NA
Bus/Rail
Bus Bus/Rail Rail Bus/Rail Bus/Rail
Auto & Rail
Auto, Rail & Bus
Rail
Bus/Rail
Bus
Bus/Rail indicates that no restriction is necessary and N/A indicates that there would not be a path available for this option by definition
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Stratified Transit Market
Drive to Rail Restrictions
First Last First Last First Last First Last
Drive to Premium Mode Restrictions
Attraction Mode Accessibility
Auto & Bus Auto & Rail Auto, Bus & Rail Auto Only
Auto Bus/Rail NA NA
Auto & Rail Auto Bus Auto Rail Auto
Auto & Bus Auto Bus Auto Rail
Bus/Rail NA NA
Auto, Rail & Bus
Auto Bus Auto Rail Auto Bus/Rail
NA
NA NA
Auto Only Auto Bus Auto Rail Auto Bus/Rail NAProd
uctio
n M
ode
Acce
ssib
ility
Bus/Rail indicates that no restriction is necessary and N/A indicates that there would not be a path available for this option by definition
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Stratified Transit MarketAttractionProduction
Accessible Mode
Percentage of Production TAZ
Percentage of Attraction TAZ
Bus/Auto 33% 22%Rail/Auto 20% 6%Bus/Rail/Auto 13% 11%Auto Only 34% 61%
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Stratified Transit MarketAttractionProduction
Market Share
Attraction Mode Accessibilities
TotalBus/Auto Rail/AutoBus/Rail/
AutoAuto Only
22% 6% 11% 61% 100%
Production Mode
Accessibilities
Bus/Auto 33% 7.3% 2.0% 3.6% 20.1% 33%Rail/Auto 20% 4.4% 1.2% 2.2% 12.2% 20%Bus/Rail/Auto 13% 2.9% 0.8% 1.4% 7.9% 13%Auto Only 34% 7.5% 2.0% 3.7% 20.7% 34%
Total 100% 22% 6% 11% 61% 100%
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Stratified Transit MarketProduction
PnR
Attraction
Legend Rail Bus
Line
Buffer
Bus A
Bus B
Rail Line 1
Rail Line 2
Bus C
Walk to Premium Best Paths
Attraction Mode Accessibility
Auto & Bus Auto & Rail Auto, Bus & Rail Auto Only
A - 2 - B - C
1 - B - C
1 - B - C
NA
A - 2 - 1 A - 2 - 1 NA
1 1 NA
1 1 NA
NA NA NAAuto Only
Auto, Rail & Bus
Auto & Rail
Prod
uctio
n M
ode
Acce
ssib
ility
Auto & Bus
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Stratified Transit MarketCombine Market Specific Paths with Market Shares
Production Mode Accessibilities
Attraction Mode Accessibilities DA SR WB WP DB DP
Market Share
Bus/Auto Bus/Auto 64.9% 9.8% 5.6% 11.5% 1.2% 6.9% 7.3%Rail/Auto Bus/Auto 62.4% 9.4% 0.0% 20.9% 1.1% 6.2% 4.4%
Bus/Rail/Auto Bus/Auto 61.4% 9.3% 3.7% 18.6% 1.0% 6.0% 2.9%Auto Bus/Auto 75.3% 11.4% 0.0% 0.0% 1.9% 11.3% 7.5%
Bus/Auto Rail/Auto 54.7% 8.3% 0.0% 24.7% 0.0% 12.4% 2.0%Rail/Auto Rail/Auto 45.9% 6.9% 0.0% 38.5% 0.0% 8.7% 1.2%
Bus/Rail/Auto Rail/Auto 45.9% 6.9% 0.0% 38.5% 0.0% 8.7% 0.8%Auto Rail/Auto 68.2% 10.3% 0.0% 0.0% 0.0% 21.4% 2.0%
Bus/Auto Bus/Rail/Auto 54.1% 8.2% 2.1% 23.3% 0.4% 11.9% 3.6%Rail/Auto Bus/Rail/Auto 45.8% 6.9% 0.0% 38.4% 0.3% 8.5% 2.2%
Bus/Rail/Auto Bus/Rail/Auto 45.6% 6.9% 0.9% 37.8% 0.3% 8.5% 1.4%Auto Bus/Rail/Auto 68.0% 10.3% 0.0% 0.0% 0.8% 20.9% 3.7%ALL Auto 86.8% 13.2% 0.0% 0.0% 0.0% 0.0% 61.0%
73.1% 11.1% 0.2% 6.0% 0.3% 9.3% 100.0%PA Trip Shares
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Conclusions
Stratifying the Transit Market will remove artificially high walk Accessibilities
Implementation Requires– Mode Specific Buffers– Path Restrictions