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OCR for page 11
Introduction 11 Table 3. Information required at each AFC system tier. Card Card Card Card Time Date Location* Fare Trans- Number Value $ Type (Terminal Value action Number) $ Number Payment Device Entry Exit Load Device Back Office * Encoded on card for distance-based fare structures To identify the minimum information required to allow financial settlement between two or more participating entities, which may include a non-transit merchant, the following examples have been developed for each distinct process: Information to be exchanged for payment only, NO card loads; Information to be exchanged for loading value, NO payment transactions; and Process used to determine settlement position by a participant, the aggregation of payments and loads. 1.6.1 Information to Be Exchanged for Payment Figure 5 identifies the minimum information to be exchanged between each element of a fare payment system--from the inception of the transaction between the card and reader, through TransLink Card WMATA TransLink Entry Exit Central Processor Central Processor Transaction TransLink WMATA System Data Transactions WMATA Time Information Time Required Trans # Card # Date & Time Fare $ Terminal # Date Location (terminal number) Settlement Date File Fare $ Card type Location Card number $ Banks WMATA Bank MTC Bank Figure 5. Using TransLink Card to pay at WMATA.

OCR for page 11
12 Smartcard Interoperability Issues for the Transit Industry SmarTrip Card TransLink WMATA Central Processor Central Processor WMATA TransLink System Load Transactions WMATA Time Information Load Required Trans # Card # Date & Time Value $ Terminal # Date Location (terminal number) Settlement Load Value $ File Card type Card number $ Banks TransLink Bank WMATA Bank Figure 6. Loading value to the WMATA Card at a TransLink load device. WMATA Activities WMATA Activities With With TransLink TransLink TransLink Cards TransLink Cards Net Net Payment Payment Transactions Transactions Net Net (Negative) TransLink TransLink Settlement Settlement Payment Payment to to Processing Processing WMATA WMATA Net Net Load Load Transactions Transactions Positive WMATA WMATA Payment $ Payment to to TransLink TransLink WMATA Bank $ TransLink Bank Figure 7. Process for net settlement position.