Philosophy of Freeway Guide Signs
Freeway guide signs and conventional guide signs are based
on different philosophies, as explained below:
Freeway Guide Signs.
The major emphasis
of freeway signing is on destinations. Control cities and street
names provide the primary exiting information for drivers. Route
signs and cardinal directions are used in freeway signing, but they
are not emphasized to the same extent as control cities and street
names. Guidance information, such as the destination (control city,
street, or highway), is provided in advance of the exit. Information
is shown in Advance Guide signs and repeated in Exit Direction signs.Conventional Guide Signs.
The major emphasis
of conventional guide signing is on highway class, number, and cardinal
direction. This information is provided at the intersection where
the maneuver is performed. Destination information (cities) is provided
in advance of the intersection and is not repeated at the intersection.