UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2000 TRAVERWOOD DRIVE

ANN ARBOR, MI  48105-2498

									     OFFICE OF

									AIR AND RADIATION

July 2016

MEMORANDUM

SUBJECT:  Summary of SmartWay Port Dray 2014 Data

FROM:  L. Steele, EPA-OTAQ, Assessment and Standards Division

TO:  Greenhouse Gas Emissions Standards and Fuel Efficiency Standards
for Medium- and Heavy-Duty Engines and Vehicles - Phase 2 - Docket
EPA-HQ-OAR-2014-0827

This memorandum presents an excerpt of data acquired by EPA’s SmartWay
team.  The report was run for the 2014 data year for Dray Class 8b
tractors.

  REF _Ref456788146 \h  Table 1  presents data reported for the 1,740
tractors that were identified as participating in a now discontinued
SmartWay port dray program.  The SmartWay database includes other data
for drayage tractors that may engage in port dray activity, but are not
designated with a port identifier in the database.  In analyzing these
data, some observations regarding duty cycles can be made.  For example,
the weighted average of reported annual idle hours is calculated to be
762 hours for the vehicles listed in this table.  Also, the weighted
average of reported percent highway operation is calculated to be 59
percent for the vehicles listed in this table.

Table   SEQ Table \* ARABIC \s 1  1 : Sample of Port Dray SmartWay 2014
Data

