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interactions and considerations are addressed within the HCMAG in the
context of these five facility types. The HCMAG also identifies and
discusses interactions that occur between adjacent components of the
transportation system, such as the operational effects of installing a new
traffic signal on an arterial with pre-existing upstream and downstream
signalized intersections. It is anticipated that future versions of the
HCMAG will be expanded to address more comprehensively the other facility
types contained in the HCM.
All analyses within the HCMAG are conducted in U.S.
Customary units, reflecting the continuing predominant use of these analysis
units throughout the United States. This should not have any great bearing
on the overall usefulness of the Guidebook, whose overarching purpose is to
increase user understanding of the appropriate application of HCM procedures
and the appropriate interpretation of the results.
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to Navigate the HCMAG