LTPP Logo Long Term Pavement Performance Logo

LTPP TSSC Home

Data User's Corner





LTPP TABLE NAVIGATOR: Field View


Fields for table: TRF_MEPDG_AX_DIST_ANL_VAR

Field NameCodesData TypeUnitsTest ProtocolDescription
STATE_CODE
STATE_PROVINCENUMBER(2)


Numerical code for state or province. U.S. codes are consistent with Federal Information Processing Standards.
VAR_POP_PERCENT_AXLES

NUMBER(8,3)
%

The population variance associated with the mean percentage of axles.
SHRP_ID

VARCHAR2(4)


Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
VEHICLE_CLASS
VEHICLE_CLASSNUMBER(2)


Vehicle classification code using 13 bins as described in the FHWA Traffic Monitoring Guide.
AXLE_GROUP
AXLE_GROUPNUMBER(1)


Type of axle to which this data applies.
WEIGHT_BIN_LOW

NUMBER(6)
lb

The lowest weight for an axle represented in this bin
RECORD_STATUS

VARCHAR2(1)


A code indicating the general quality of the data.
WEIGHT_BIN_HIGH

NUMBER(6)
lb

The highest weight for an axle represented in this bin
NUM_YEARS

NUMBER(2)


Number of years included in the mean.
MEAN_PERCENT_AXLES

NUMBER(6,3)
%

The average percentage of axles whose weight falls between the values of WEIGHT_BIN_LOW and WEIGHT_BIN_HIGH inclusive.