LocationID:
Traffic Survey's 10-character unique station identifier.
Digits 1-3 are the county code beginning with 001 and ending
with 100. Digits 4-6 are placeholders. Digits 7-10 are the
station number for the indicated county.
Example:
0010000023 indicates that the station is in
county 001 (Alamance County), with the assigned station
number 0023.
Category:
Identifies the collection type.
Volume is the standard short-term volume
collection type not collected on Interstate Mainline.
Ramp:
Standard category for short-term volume collection associated
with ramp-type roadway characteristics.
Freeway:
Category for stations on Interstate/Freeway full-control-access
routes that are collected through a non-intrusive device and/or
calculated through a volume balancing process in conjunction
with ramp collections.
Categories FRWY VIRTUAL and
RAMP VIRTUAL provide an opportunity to
simulate volume counts at points along a corridor that are
not currently monitored by a station device.
Direction:
Identifies if the direction is 1-Way, 2-Way, or Ramp.
RouteID:
The 11-digit route number is a route naming convention used
by NCDOT. It can be used to reference milepost locations
along a route.
The last three digits are the SAP county code. The county
code starts at 001 for Alamance County and ends with 100
for Yancey County. View the
Guide to the NCDOT Eleven-Digit Route Number
.
Located On/Approach/Crossroad:
Provides an approximate location description of where the
AADT was collected.
Latitude/Longitude:
Coordinates provided to the approximate traffic data
collection location.
FUNC_CLS:
Provides the designated route Functional Classification (FC)
numerical value. Functional Class is a classification system
of roads based on the traffic service they are intended to
provide. View
Functional Classification designations
.
FUNC_CLS_TX:
Provides the text description for the numerical FUNC_CLS value.
County:
County name.
RTE_CLS_TX:
Provides the text description for the numerical RTE_CLS value.
AADT_2022-20YY:
The AADT provided is based on actual or estimated collections.
Note:
A value of <Null> in the AADT field prior to 2024
indicates that an estimated value was not published for that
year in the official AADT publication.
From the 2024-year publication and beyond, NCDOT Traffic
Survey Group has included AADT estimates for traffic monitoring
stations that are active in the collection inventory and were
unable to be collected during the collection cycle as part of
the AADT data set.
