HPMS requires reported AADT to be an average daily value that represents all
days of the reporting year. AADT information reported to the FHWA will be used
by the Federal Environmental Protection Agency (EPA) for monitoring air
quality. It is extensively used for apportionment, administrative, legislative,
analytical and national highway database purposes. Code for all PAS, NHS, and
standard sample sections. Code "0" when AADT is not coded.
See the HPMS Update Manual for more information.
Used in investment modeling to estimate needed capacity improvements, in the
national highway database and for congestion, delay and other data analyses.
This value is generated by the HPMS software formulas.
V/SF (Rural 2 or 3 lanes) = [AADT] X [K Factor]/Peak Capacity
V/SF (Rural multi-lane and all urban) = [AADT] X [K Factor X D Factor]/Peak
Capacity
Used in investment requirements modeling to calculate capacity, in the cost
allocation pavement model, and in congestion, delay and other analyses. The
Federal software conforming to the Highway Capacity Manual Guidelines
calculates this field.
See the HPMS Update Manual for more information.
Normally 50-75% (100% for one-way facilities). Used for investment modeling to
calculate capacity and estimate needed capacity improvements, in congestion,
delay and other analyses and in the cost allocation pavement model. If the
K-Factor is obtained from a short count duration during a normal peak hour,
collect that data by direction so that it may also be used to calculate the
directional factor.
Approximately the 30th highest volume hour of the year for both directions of
travel. It is also roughly the normal peak hour volume for both directions of
travel divided by the AADT. Used in investment modeling to calculate capacity
and estimate needed capacity improvements, in cost allocation pavement model,
and for other analyses, including delay estimation. Code to the nearest
percent. Normal ranges are from 6-18%.
See the HPMS Update Manual for more information.
Used to normalize the forecast AADT to a consistent 20-year horizon.
Used in investment modeling to estimate deficiencies and future improvement
needs, in cost allocation pavement modeling and other analyses. Code the
forecasted two-way AADT for the year specified in Year of Future AADT. The
intent is to include a 20-yeare forecast in the HPMS, but the estimate may be
for any period within 18 to 25 year time span.
Used in investment modeling to estimate running speed and other analyses,
including delay estimation. Enter daytime speed limits for autos posted or
legally mandated on the greater part of the section. If there are no legally
mandated limits, code "999". Use predominant speed limit where more than one
exists. Do not average.
Used in investment modeling to calculate capacity, estimate type of design and
for national highway database purposes. Code the predominant median width to
the nearest tenth of a meter (X.X) or the nearest foot(X.0). When Median Type
is coded "0" or "4" enter "0.0". Enter "999.9" for a median width greater than
33 meters (100 ft). The median width should be measured between the inside
edges of the opposing through lanes (including median shoulders, if any).
Continuous turn lanes are not applicable. Ignore turning bays cut into the
median.
Used in investment requirements modeling to calculate capacity, estimate type of
design and for national highway database purposes.
Codes
1 = Curbed
2 = Positive Barrier(Usually guardrail or concrete barrier, can be impenetrable
shrubbery)
3 = Unprotected [May be marked. Continuous crosshatching at least 1.2 meters (4
feet) wide may be considered a median as long as it is not used as a turn lane
by law.]
4 = None (Turning lanes/bays are not considered medians unless cut into a
median extending through the major portion of the segment. Continuous turning
lanes are not considered medians.)
Used in the cost allocation pavement model to deteriorate pavement condition.
Retain the coded improvement year until another improvement has been made on
the section. Code zero if section has not been improved since 1988. Included
any improvements made after 1987 on the section. The definition of an HPMS
Surface Improvement is one that included a minimum of 25 millimeters (one inch)
of compacted pavement material.
Code "0" when data are not provided. Do not count auxiliary lanes
(collector/distributor lanes, weaving lanes, frontage road lanes, parking or
turning lanes, acceleration or deceleration lanes, toll collection lanes and
truck climbing lanes. This item provides basic inventory information on the
amount of public road in use. It is used for apportionment, administrative,
legislative, analytical, and national highway database purposes. Code for all
HPMS sections EXCEPT those on the rural minor collector and rural and urban
local functional systems.
When more than one connector is involved, use the predominant type. 0 = Section
is NOT on the NHS 1 = Section IS on the NHS, but is NOT an intermodal connector
Types of NHS Intermodal Connectors
2 = Major airport
3 = Major port facility
4 = Major Amtrak Station
5 = Major rail/ truck terminal
6 = Major intercity bus terminal
7 = Major public transit terminal or multi-modal passenger terminal
8 = Major pipeline terminal
9 = Major ferry terminal
Rural Functional System codes
1 = Principal Arterial Interstate (PAI)
2 = Other Principal Arterial (OPA)
6 = Minor Arterial (MA)
7 = Major Collector (MJC)
8 = Minor Collector (MNC)
9 = Local (LOC)
Urban Functional System Codes
11 = Principal Arterial Interstate (PAI)
12 = Principal Arterial Other Fwys & Exp (OFE)
14 = Other Principal Arterial (OPA)
16 = Minor Arterial (MA)
17 = Collector (COL)
19 = Local (LOC)
For more detailed description, see HPMS Update Manual Appendix A-14
The state control filed contains the following information:
-
Alpha County Abbreviation (See HPMS Update Manual Appendix A for listing)
-
Jurisdiction
-
Post Mile Limits or Street Name
-
"From" Location - Beginning of the record or section
-
"To" Location - Ending of the record or section
-
County Road System Map Number
-
Year of Field Review
State Review = R plus last 2 digits of review year (e.g. R00)
FHWA Review = F plus last 2 digits of review year (e.g. F00)
New reviews = RX plus last digit of review year (e.g. RX0)
Reclassification Codes:
A = New section
B = Functional System change
C = Later new section
C- Later Functional System change
-
HPMS Staff Use Flag
"*" indicates the section is flagged for one of the following:
SHWY - manual update of AADT
LOACL - seasonal count station exists on section
-
Vehicle Classification Location
"V" designates that a vehicle classification location is within the section
boundaries.
-
Approach Width
Normally 1/2 of the paved width
-
Metropolitan Planning Organization Code
A = AMBAG
B = BCAG
C = SACOG
D = SANDAG
E = MCAG
F = COFCG
H = SCRTPA
J = SJCOG
K = KERNCOG
L = SLOCOG
M = MTC
N = SAAG
R = SBCAG
S = SCAG
T = TCAG
-
MPO Regional Code
Subdivision of MPO where applicable
-
Reporting Status of Section
X = new sample
N = jurisdiction did not report in previous year
-
Small Urban Code
See HPMS Update Manual Appendix C
Specifies the section or grouped record identifier using the following format
XXYYYYZZZZZZ (section identifier) or XX0000TTTT00 (grouped record identifier)
where:
XX = Caltrans District
YYYY = Route ZZZ.ZZZ = Postmile or Section Designation
TTT.T = Countywide Unique Number
Used for tracking the State certified maintained mileage for the Federal
government. Used for apportionment, administrative, legislative, analytical,
and database purposes. On independently aligned, divided highways, centerline
length also may be reported as the average of the lengths of the directional
roadways, measured along their centerlines. Report the length of the two
roadways of a one-way couplet independently; do not average. Code length to the
nearest thousandth. Length cannot be zero coded.
See the HPMS Update Manual for further information.
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