[Code of Federal Regulations]
[Title 40, Volume 29]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR610.23]

[Page 1003]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 610_FUEL ECONOMY RETROFIT DEVICES--Table of Contents
 
       Subpart B_Evaluation Criteria for the Preliminary Analysis
 
Sec. 610.23  Operator interaction effects.

    The device will also be evaluated with respect to:
    (a) The degree of sensitivity of device effectiveness to variances 
in installation, operation and maintenance;
    (b) The adequacy of manufacturer-furnished instructions for 
minimizing variances in installation, operation and maintenance;
    (c) The extent to which device installation or use, or the effects 
of such installation or use, relate to Federal emission control 
regulations;
    (d) Effects on the performance, safety, or occupant comfort of the 
retrofitted vehicle, and on that of other vehicles; and
    (e) The relationship between total cost of ownership of the device 
(purchase price plus maintenance costs) and the cost savings realizable 
from its fuel economy effects.