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GIS in Paratransit

Jeff BeckerDenver Regional Transportation District

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Access-a-Ride (AaR)

ADA complimentary paratransit service. Eligible customers are provided trips within ¾ mile of a fixed route during its span of service.• Extraction of fixed-route scheduling system

data.• Application of ADA business rules.• Export of buffered route traces and service

spans to GIS and AaR scheduling system.

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Fixed-Route Scheduling System – 3 txt files:• 1,100 route/pattern

traces• Route/pattern data• Service spans

Geodatabase - Apply ADA Business Rules

775 route/pattern traces

GIS AaR

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GIS• Buffer ¾ mile• Fill doughnuts

< 1.5 sq. mi.• Create ADA

Boundary

Import doughnut layer to AaR

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Effect of Bus Service Changes on AaR Customers

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Call-n-Ride (CnR)

CnR is general public paratransit provided in certain communities throughout RTD’s district.• Service planning and warrants.• Relationship of CnR to AaR.• Service configuration and scheduling.• Use of trip data for Origin-Destination (OD)

analysis for service planning.

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CnR Service Planning

Population + Employment Density

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CnR Relationship to AaR

AaR requests are offered to book trips on CnR.

Much less costly.

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CnR Service Configuration & Scheduling

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CnR Trip Origin-Destination Analysis

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OD Analysis – Multiple Service Providers

Identify overlap and potential for coordination.

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Longmont CnR, Via & Bus

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Location Quality Control