Regulations Requiring Onboard Diagnostic Systems on 2010 and Later Heavy-Duty Engines Used in Highway Vehicles Over 14,000 Pounds; Revisions to Onboard Diagnostic Requirements for Diesel Highway Vehicles Under 14,000 Pounds. Summary and Analysis of Comments

This document contains comments on the U.S. Environmental Protection Agency's (EPA's) proposed regulations requiring onboard diagnostic systems on 2010 and later heavy-duty engines used in highway vehicles over 14,000 pounds. Comments are also included on EPA's revisions to onboard diagnostic requirements for diesel highway vehicles under 14,000 pounds. The comments are placed under the heading which most accurately characterizes the nature of the comment. The document begins with an index of commenters, an introduction to the document, and general statements in support of the proposed rule, in opposition to the proposed rule, and in support of other comments. Major headings under which the specific comments appear are as follows: (I) Overview; (II) What are the Proposed OBD Requirements and When Would They be Implemented?; (III) Are the Proposed Monitoring Requirements Feasible?; (IV) What are the Service Information Availability Requirements?; (V) What are the Emissions Reductions Associated with the Proposed OBD Requirements?; (VI) What are the Costs Associated with the Proposed OBD Requirements?; (VII) What are the Updated Annual Costs and Costs per Ton Associated with the 2007/2010 Heavy-duty Highway Program?; (VIII) What are the Requirements for Engine Manufacturers?; (IX) What are the Issues Concerning Inspection and Maintenance Programs?; (X) Statutory and Executive Order Reviews; (XI) Statutory Provisions and Legal Authority; and (XII) Other comments.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Tables;
  • Pagination: 129p

Subject/Index Terms

Filing Info

  • Accession Number: 01489744
  • Record Type: Publication
  • Report/Paper Numbers: EPA-420-R-08-018
  • Files: TRIS
  • Created Date: Aug 14 2013 11:36AM