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Table of Contents - APTAStandards.com

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• Front-end devices<br />

4.7.2 Applicability to UTFS Effort<br />

TransLink<br />

modate the unique fare and business<br />

le structures <strong>of</strong> at least 26 participating transit agencies. It currently supports majority<br />

<strong>of</strong> the fare t t the US public transit industry. Of all the<br />

ocuments analyzed, this specification is the only one that is based on an actual<br />

d<br />

® is the first smart card based regional transit fare payment system in the<br />

United States. The system is designed to ac<strong>com</strong><br />

ru<br />

produc ypes that are available in<br />

d<br />

implementation. There is a one to one match between most <strong>of</strong> the TransLink UD an<br />

WP 4 message types.<br />

ERG stated that the APTA-000 specifications analyzed in the Section 4.9 <strong>of</strong> this<br />

document will supercede the Phase I TransLink document analyzed below, and<br />

represent<br />

the foundation <strong>of</strong> the Translink Phase II messages.<br />

4.7.3 Common Message Structure<br />

The TransLink ® message structure consists <strong>of</strong> a header followed by a UD record, which<br />

contains the tr ansaction specific usage data as illustrated<br />

in Figure 4.7-1. The structure<br />

is designed to allow bat ch transmission <strong>of</strong> multiple card transactions or event data<br />

under a sin gle header. The UD record consists <strong>of</strong> 18 sub fields, which include both<br />

financial and non-financial transaction data and support VEI data structures by<br />

utilizing VEI log file dialogs.<br />

Header<br />

Version<br />

Header<br />

Header<br />

Length<br />

Card<br />

SN<br />

Transaction<br />

Sequence<br />

Batch<br />

Sequence<br />

Contract<br />

ID<br />

Operator<br />

ID<br />

Exhibit 4.7-1 TransLink ® Usage Data Records<br />

Header UD RECORD<br />

Contract<br />

SN<br />

4.7.4 Message Types<br />

Security<br />

Module<br />

ID<br />

Contract<br />

Sequence<br />

#<br />

Device<br />

ID<br />

Contract<br />

Sync<br />

#<br />

Payment<br />

Method<br />

Key UD UD<br />

Version<br />

NO<br />

Transaction<br />

Qualifier<br />

MAC Header<br />

Version<br />

Amount<br />

Operator<br />

ID<br />

Sequence<br />

#<br />

Date<br />

and<br />

Time<br />

Location Balance<br />

UD<br />

Type<br />

Last<br />

Add<br />

Value<br />

Summary<br />

The TransL ink transactions fall into one <strong>of</strong> the following six UD types:<br />

®<br />

• Fare Transaction<br />

• Add Value Transaction<br />

• Card Management Events<br />

• Device Events<br />

• Audit Register Snapshots<br />

UD<br />

Sub-<br />

Type<br />

Card<br />

Sync<br />

No<br />

UD<br />

Version<br />

Each UD type is further divided into subtypes within them as listed in Appendix B.<br />

Page 52<br />

Fare<br />

Category<br />

Usage<br />

Data<br />

Destination<br />

Location<br />

MAC<br />

MAC

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