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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

General

Legacy ID
21

N 4520.116

Notice
Subject
FEDERAL-AID HIGHWAY PROGRAM OBLIGATIONS - FISCAL YEAR (FY) 1992
Classification CodeDate 
N 4520.116December 31, 1991 

&nbs

N 4520.177

Notice
Subject
Federal-Aid Highway Program Obligations - Fiscal Year (FY) 2004 Redistribution After August 1, 2004
Classification CodeDateOffice of Primary Interest
N 4520.177August 27

HRSO - Roadway Visibility

Roadway visibility refers to the visibility of the users of the transportation system (e.g., through providing lighting) and visibility of the surrounding infrastructure (e.g., visibility of signs and pavement markings). Enhanced visibility can improve driver detection and reaction times, when responding to traffic control devices (TCDs) or other road users, and can reduce visual demands of the driver.