Assigned Network

Overview

This glossary defines the attributes found in the Assigned.shp shapefile, which contains the base year highway network with traffic assignment outputs by time period. This is the primary output network from the WF-TDM v10 model showing loaded volumes, speeds, delays, and other metrics. The file is produced by 04_SummarizeLoadedNetworks.s in the 5_AssignHwy model step.

Model Time Periods

The WF-TDM uses 5 time periods for assignment and analysis:

Period Code Description Typical Hours Assignment Direction
AM Morning Peak 6:00–9:00 AM
MD Midday 9:00 AM–3:00 PM Off-peak
PM Evening Peak 3:00–6:00 PM
EV Evening 6:00 PM–6 AM Evening off-peak
DY Daily Full 24 hours Aggregated full-day metric

Note: DY_VOL = AM_VOL + MD_VOL + PM_VOL + EV_VOL. Daily speeds and times are volume-weighted averages of the four period values.

Network Identification & Geometry

Area, Zone & Geographic Classification

Zone Assignments

Field Type Units Definition
TAZID Integer N/A Traffic Analysis Zone ID; typically based on link’s downstream node or midpoint
CO_TAZID Integer N/A Combination of CO_FIPS and TAZID numbered by county
SEGID Integer N/A Segment ID; aggregation unit for segment-level analysis and reporting
SUBAREAID Integer N/A Sub-area ID for USTM
CBD Integer 0/1 Central Business District indicator (1 = link within CBD boundary)
REMM Integer 0/1 Regional Economic Model Module (REMM) indicator (1 = land use modeling area)

Geographic/Administrative Identifiers

Field Type Units Definition
CO_FIPS Text N/A County FIPS code (Federal Information Processing Standards)
CO_NAME Text N/A County name (e.g., “Salt Lake”, “Davis”, “Weber”)
CITY_FIPS Integer N/A City/municipality FIPS code
CITY_UGRC Integer N/A Utah Geospatial Resource Center city code
CITY_NAME Text N/A City/municipality name
DISTLRG Integer N/A Large district ID
DLRG_NAME Text N/A Large district name
DISTMED Integer N/A Medium district ID
DMED_NAME Text N/A Medium district name
DISTSML Integer N/A Small district ID
DSML_NAME Text N/A Small district name

Roadway Characteristics

Functional Classification

Field Type Units Definition
FT Integer Code Functional Type code:
FTCLASS Integer Code Functional Type Class; higher-level grouping of FT for analysis and sorting
AREATYPE Integer Code Area Type classification (1=Rural, 2=Transition, 3=Suburban, 4=Urban, 5=CBD-like); indicates development density
ATYPENAME Text N/A Area Type name (text descriptor)
ATYPEGRP Text N/A Area Type grouping for report aggregation
URBANVAL Integer Code Urbanization value, calculated as a combined population and employment density value for the 5 nearest TAZs

Physical Capacity

Field Type Units Definition
LANES Integer Count Number of lanes in the link direction
CAP1HR1LN Integer Vehicles/hour/lane Capacity per lane, per hour (standardized: typically 1,800–2,000 veh/hr/lane depending on FT)
RELCAP1HR Float Ratio Relative capacity adjustment (1.0 = standard; <1.0 = reduced capacity for special conditions)
SFAC Float Factor Speed Factor — scenario-specific link-level free-flow speed calibration multiplier (1.0 = no adjustment; sourced from master network SFAC_Base or SFAC_Fut field depending on scenario year)
CFAC Float Factor Capacity Factor — scenario-specific link-level capacity calibration multiplier applied to per-lane hourly capacity (1.0 = no adjustment)

Capacity by Time Period

Field Type Units Definition
AM_CAP Integer Vehicles/hour Link capacity during AM peak period
MD_CAP Integer Vehicles/hour Link capacity during midday period
PM_CAP Integer Vehicles/hour Link capacity during PM peak period
EV_CAP Integer Vehicles/hour Link capacity during evening period
ADHOVCAP1H Integer Vehicles/hour Additional HOV (High Occupancy Vehicle) capacity per hour; available on managed/HOT lanes

Special Facilities & Tolls

HOT Lane & Managed Facility Designations

Field Type Units Definition
HOT_CHRGPT Text N/A HOT (High Occupancy Toll) charging point identifier
HOT_ZONEID Integer N/A HOT zone ID for toll rate/pricing attribution
HOT_CHRGAM Float $/vehicle-mile or $ AM peak HOT toll charge rate
HOT_CHRGMD Float $/vehicle-mile or $ Midday HOT toll charge rate
HOT_CHRGPM Float $/vehicle-mile or $ PM peak HOT toll charge rate
HOT_CHRGEV Float $/vehicle-mile or $ Evening HOT toll charge rate

Ramp & Special Facility Indicators

Field Type Units Definition
FF_RAMPPEN Float Factor Free-flow ramp penalty adjustment factor (speed reduction for on-ramps/off-ramps)
AM_RAMPPEN Float Factor AM peak ramp penalty adjustment
MD_RAMPPEN Float Factor Midday ramp penalty adjustment
PM_RAMPPEN Float Factor PM peak ramp penalty adjustment
EV_RAMPPEN Float Factor Evening ramp penalty adjustment
DY_RAMPPEN Float Factor Daily ramp penalty adjustment
RMPGPID Integer N/A Unique ramp identifiers
MANFWYID Integer N/A Managed freeway identifier

Interchange & Project Fields

Field Type Units Definition
OP_PROJ Text N/A Operational project indicator or project code
REL_LN Integer 0/1 Type of reliability lane ie managed, reversible, for what time period peak/off peak
SEL_LINK Integer 0/1 Select link flag for detailed analysis (1 = tracked for select link analysis)

HOV/Transit Restrictions

Field Type Units Definition
HOV_LYEAR Integer Year Number of HOT/HOV lanes and in what year the HOT/HOV lanes came online
TRK_RSTRCT Text N/A Truck restriction code or descriptor (e.g., “No Trucks”, “Through Traffic Only”, time windows)

Free-Flow Speed & Performance

Free-Flow Speed (Uncongested Conditions)

Field Type Units Definition
FF_SPD Float mph Free-flow speed on the link (posted speed or design speed for uncongested flow)
FF_TIME Float Minutes Free-flow travel time (DISTANCE ÷ FF_SPD × 60)
FF_VHT Float Hours Free-flow vehicle-hours traveled (sum of times computed on FF speed)
FF_TKSPD_M Float mph Free-flow speed for medium trucks
FF_TKSPD_H Float mph Free-flow speed for heavy trucks
FF_TKTME_M Float Minutes Free-flow travel time for medium trucks
FF_TKTME_H Float Minutes Free-flow travel time for heavy trucks
FF_BTI_TME Float Minutes Free-flow Buffer Time Index (variability in free-flow times)

Time Period-Specific Performance Metrics

AM Period (Morning Peak)

Average Weekday Volumes - AWDT

Field Type Units Definition
AM_VOL Integer Vehicles/hour Total assigned vehicles during AM peak period
AM_VC Float Ratio Volume-to-Capacity ratio (values >1.0 indicate congestion/oversaturation)

Speeds & Travel Times

Field Type Units Definition
AM_SPD Float mph Average travel speed during AM assignment (based on volume-delay function)
AM_TIME Float Minutes Average travel time during AM period
AM_TKSPD_M Float mph Average speed for medium trucks during AM
AM_TKSPD_H Float mph Average speed for heavy trucks during AM
AM_TKTME_M Float Minutes Average travel time for medium trucks during AM
AM_TKTME_H Float Minutes Average travel time for heavy trucks during AM

Performance Aggregations

Field Type Units Definition
AM_VMT Float Miles Vehicle-Miles Traveled (AM_VOL × DISTANCE); total miles driven on this link during AM
AM_VHT Float Hours Vehicle-Hours Traveled (AM_VOL × AM_TIME ÷ 60); total hours spent on this link during AM
AM_DELAY Float Hours Total delay (VHT - free-flow VHT); congestion delay across all vehicles
AM_BTI_TME Float Minutes Buffer Time Index for AM (travel time variability)

MD Period (Midday)

Assignment Volumes & Congestion

Field Type Units Definition
MD_VOL Integer Vehicles/hour Total assigned vehicles during midday period
MD_VC Float Ratio Volume-to-Capacity ratio for midday

Speeds & Travel Times

Field Type Units Definition
MD_SPD Float mph Average travel speed during midday assignment
MD_TIME Float Minutes Average travel time during midday
MD_TKSPD_M Float mph Average speed for medium trucks during midday
MD_TKSPD_H Float mph Average speed for heavy trucks during midday
MD_TKTME_M Float Minutes Average travel time for medium trucks during midday
MD_TKTME_H Float Minutes Average travel time for heavy trucks during midday

Performance Aggregations

Field Type Units Definition
MD_VMT Float Miles Vehicle-Miles Traveled during midday
MD_VHT Float Hours Vehicle-Hours Traveled during midday
MD_DELAY Float Hours Total congestion delay during midday
MD_BTI_TME Float Minutes Buffer Time Index for midday

PM Period (Evening Peak)

Assignment Volumes & Congestion

Field Type Units Definition
PM_VOL Integer Vehicles/hour Total assigned vehicles during PM peak period
PM_VC Float Ratio Volume-to-Capacity ratio for PM peak

Speeds & Travel Times

Field Type Units Definition
PM_SPD Float mph Average travel speed during PM assignment
PM_TIME Float Minutes Average travel time during PM
PM_TKSPD_M Float mph Average speed for medium trucks during PM
PM_TKSPD_H Float mph Average speed for heavy trucks during PM
PM_TKTME_M Float Minutes Average travel time for medium trucks during PM
PM_TKTME_H Float Minutes Average travel time for heavy trucks during PM

Performance Aggregations

Field Type Units Definition
PM_VMT Float Miles Vehicle-Miles Traveled during PM peak
PM_VHT Float Hours Vehicle-Hours Traveled during PM peak
PM_DELAY Float Hours Total congestion delay during PM peak
PM_BTI_TME Float Minutes Buffer Time Index for PM

EV Period (Evening Off-Peak)

Assignment Volumes & Congestion

Field Type Units Definition
EV_VOL Integer Vehicles/hour Total assigned vehicles during evening period
EV_VC Float Ratio Volume-to-Capacity ratio for evening

Speeds & Travel Times

Field Type Units Definition
EV_SPD Float mph Average travel speed during evening
EV_TIME Float Minutes Average travel time during evening
EV_TKSPD_M Float mph Average speed for medium trucks during evening
EV_TKSPD_H Float mph Average speed for heavy trucks during evening
EV_TKTME_M Float Minutes Average travel time for medium trucks during evening
EV_TKTME_H Float Minutes Average travel time for heavy trucks during evening

Performance Aggregations

Field Type Units Definition
EV_VMT Float Miles Vehicle-Miles Traveled during evening period
EV_VHT Float Hours Vehicle-Hours Traveled during evening period
EV_DELAY Float Hours Total congestion delay during evening
EV_BTI_TME Float Minutes Buffer Time Index for evening

Daily Aggregated Metrics

Daily Volumes

Field Type Units Definition
DY_VOL Integer Vehicles/day Total assigned vehicles across all time periods (sum of AM_VOL + MD_VOL + PM_VOL + EV_VOL)
DY_VOL2WY Integer Vehicles/day Daily volume assuming two-way traffic (for bidirectional analyses)
DY_1K Integer Vehicles/day Daily volume in thousands (DY_VOL ÷ 1,000, for reporting)
DY_1K_2WY Integer Vehicles/day Two-way daily volume in thousands

Daily Performance

Field Type Units Definition
DY_SPD Float mph Average travel speed across the full day
DY_TIME Float Minutes Average travel time across the full day
DY_VMT Float Miles Total Vehicle-Miles Traveled (all day)
DY_VHT Float Hours Total Vehicle-Hours Traveled (all day)
DY_DELAY Float Hours Total delay (all day)

Daily Truck Speeds

Field Type Units Definition
DY_TKSPD_M Float mph Average speed for medium trucks (daily aggregate)
DY_TKSPD_H Float mph Average speed for heavy trucks (daily aggregate)
DY_TKTME_M Float Minutes Average travel time for medium trucks (daily)
DY_TKTME_H Float Minutes Average travel time for heavy trucks (daily)
DY_BTI_TME Float Minutes Buffer Time Index (daily variability)

Vehicle Classification by Purpose & Type

The model tracks trips by purpose (HBW=Home-Based Work, HBO=Home-Based Other, NHB=Non-Home-Based, HBC=Home-Based College, HBS=Home-Based Shop, IX=Internal-External, XI=External-Internal, XX=External-External, SLT=School-Led Trips):

AM Period – Vehicle Purpose Breakdown

Field Type Units Definition
AM_HBW Integer Vehicles/hour Home-Based Work trips during AM
AM_HBO Integer Vehicles/hour Home-Based Other trips during AM
AM_NHB Integer Vehicles/hour Non-Home-Based trips during AM
AM_HBC Integer Vehicles/hour Home-Based College trips during AM
AM_HBS_P Integer Vehicles/hour Home-Based School, K-12 Primary (elementary/middle school) trips during AM
AM_HBS_S Integer Vehicles/hour Home-Based School, K-12 Secondary (high school) trips during AM
AM_IX Integer Vehicles/hour Internal-External trips during AM
AM_XI Integer Vehicles/hour External-Internal trips during AM
AM_XX Integer Vehicles/hour External-External (through) trips during AM
AM_SLT Integer Vehicles/hour Short-Haul Light Truck (commercial delivery / light commercial vehicles) during AM

AM Period – Generalized Purpose Summary

These fields aggregate volumes into four generalized categories for high-level comparisons:

Field Type Units Definition
AM_PER Integer Vehicles/hour Personal passenger vehicle trips during AM (all HOBased + NHB purposes)
AM_EXT Integer Vehicles/hour External-station trips during AM (IX + XI + XX)
AM_CV Integer Vehicles/hour Commercial vehicle (short-haul light truck, SLT) volume during AM
AM_TRK Integer Vehicles/hour Truck volume (SMD + SHV + LMD + LHV) during AM
AM_TOT_GPR Integer Vehicles/hour Total volume — sum of PER + EXT + CV + TRK (should match AM_VOL)

AM Period – Generalized Vehicle-Type Summary

These fields break out volume by occupancy/toll-access mode to support managed-lane and HOT analyses:

Field Type Units Definition
AM_DA_NON Integer Vehicles/hour Drive-Alone, Non-managed-lane trips during AM (SOV on general-purpose lanes, including external and commercial/truck)
AM_SR_NON Integer Vehicles/hour Shared-Ride, Non-managed-lane trips during AM (carpool on general-purpose lanes, including school trips)
AM_HOV Integer Vehicles/hour HOV-eligible (High Occupancy Vehicle) trips during AM (carpoolers using HOV lanes)
AM_TOL Integer Vehicles/hour Toll-paying trips during AM (SOV and carpool using toll/HOT lanes)
AM_TOT_GVH Integer Vehicles/hour Total volume — sum of DA_NON + SR_NON + HOV + TOL (should match AM_VOL)

AM Period – Detailed Trip-Purpose and Truck-Class Breakdown

These fields provide detail on each truck class and are part of the by Purpose field group:

Field Type Units Definition
AM_SMD Integer Vehicles/hour Short-Haul Medium-Duty trucks during AM (single-unit trucks 10,001–26,000 lbs GVWR, short-haul origin)
AM_SHV Integer Vehicles/hour Short-Haul Heavy Vehicles during AM (combination trucks >26,000 lbs GVWR, short-haul origin)
AM_LMD Integer Vehicles/hour Long-Haul Medium-Duty trucks during AM (external-origin medium-duty trucks)
AM_LHV Integer Vehicles/hour Long-Haul Heavy Vehicles during AM (external-origin combination/semi trucks)
AM_TOT_PUR Integer Vehicles/hour Total volume — sum of all purpose + truck-class fields (should match AM_VOL)

AM Period – Detailed Vehicle Lane-Access Breakdown

These fields provide a finer vehicle classification by origin type and lane access. They are part of the by Vehicle field group output in Assigned.shp:

Field Type Units Definition
AM_DAN_PER Integer Vehicles/hour Drive-Alone Non-managed — personal trips (SOV passenger cars, non-toll, non-HOV) during AM
AM_SRN_PER Integer Vehicles/hour Shared-Ride Non-managed — personal trips (carpool + school trips, non-HOV lane) during AM
AM_DAN_EXT Integer Vehicles/hour Drive-Alone Non-managed — external trips (IX + XI + XX) during AM
AM_DAN_CVT Integer Vehicles/hour Drive-Alone Non-managed — commercial/truck trips (SLT + SMD + SHV + LMD + LHV) during AM
AM_SR_HOV Integer Vehicles/hour Shared-Ride HOV trips (carpoolers in HOV/managed lanes) during AM
AM_DA_TOL Integer Vehicles/hour Drive-Alone Toll trips (SOV paying toll on HOT lanes) during AM
AM_SR_TOL Integer Vehicles/hour Shared-Ride Toll trips (carpool paying toll on HOT lanes) during AM
AM_TOT_VEH Integer Vehicles/hour Total volume — sum of all detailed vehicle categories (should match AM_VOL)

MD, PM, EV, DY Periods – Equivalent Breakdowns

Identical sets of fields exist for MD (Midday), PM (Evening Peak), EV (Evening), and DY (Daily aggregated) periods. Replace AM_ with the appropriate period prefix:

Generalized Purpose Group ([PERIOD]_PER, _EXT, _CV, _TRK, _TOT_GPR)
Generalized Vehicle Group ([PERIOD]_DA_NON, _SR_NON, _HOV, _TOL, _TOT_GVH)
Detailed Purpose/Truck Group ([PERIOD]_HBW, _HBO, _NHB, _HBC, _HBS_P, _HBS_S, _IX, _XI, _XX, _SLT, _SMD, _SHV, _LMD, _LHV, _TOT_PUR)
Detailed Vehicle Lane-Access Group ([PERIOD]_DAN_PER, _SRN_PER, _DAN_EXT, _DAN_CVT, _SR_HOV, _DA_TOL, _SR_TOL, _TOT_VEH)

Note: All purpose/vehicle breakdowns sum to the total period volume ([PERIOD]_VOL).

Trip Purpose Reference

Code Full Name Definition
HBW Home-Based Work Trips beginning or ending at home with work as the other trip end
HBO Home-Based Other Trips beginning or ending at home for non-work, non-school purposes (shopping, recreation, personal business, etc.)
NHB Non-Home-Based Trips where neither end is the home (e.g., work-to-shopping, shopping-to-restaurant)
HBC Home-Based College Trips between home and a college or university campus
HBS_P Home-Based School — K-12 Primary Trips between home and elementary/middle school (K-8 grade range)
HBS_S Home-Based School — K-12 Secondary Trips between home and high school (9–12 grade range)
IX Internal-External Trips originating inside the modeled region and destined to an external connector (leaving the study area)
XI External-Internal Trips originating at an external connector and destined inside the modeled region (entering the study area)
XX External-External Trips that enter and exit the modeled region (pass-through traffic)

Vehicle Class Reference

The model distinguishes five truck/commercial vehicle classes plus passenger vehicles:

Code Class GVWR / Description Network Variables
PER / CV (personal) Passenger Vehicle All passenger cars, SUVs, vans — single or shared occupancy AM_PER, AM_DA_NON, AM_SR_NON
SLT Short-Haul Light Truck Light commercial delivery vehicles (pickup trucks used commercially, vans, GVWR ≤ ~14,000 lbs). Short-distance trips originating inside the model area. Treated as Commercial Vehicles (CV) in generalized summaries. AM_SLT, AM_CV
SMD Short-Haul Medium-Duty Single-unit commercial trucks, GVWR 10,001–26,000 lbs, short-haul (origin inside model area) AM_SMD
SHV Short-Haul Heavy Vehicle Combination/semi trucks, GVWR >26,000 lbs, short-haul (origin inside model area) AM_SHV
LMD Long-Haul Medium-Duty Medium-duty trucks with external/long-haul origin (entering or passing through model area) AM_LMD
LHV Long-Haul Heavy Vehicle Heavy combination trucks with external/long-haul origin (entering or passing through model area) AM_LHV
EXT External Passenger Vehicle Passenger-car IX, XI, XX trips (external station boundary traffic) AM_EXT, AM_IX, AM_XI, AM_XX

Truck Groupings used in speed/time calculations: - Medium-Duty trucks (_Trk_MD): SMD + LMD — speed is auto speed − 3 mph - Heavy vehicles (_Trk_HV): SHV + LHV — speed is auto speed − 5 mph

Complete Field Inventory

Below is the complete sequential list of attributes in the Assigned.shp shapefile, organized by field group as written by the model script. Actual field count may vary slightly based on scenario options (e.g., optional PM1hr peak-hour fields are excluded here).

--- Base Network Identification & Geometry ---
 1. A
 2. B
 3. DISTANCE
 4. STREET
 5. ONEWAY
 6. EXTERNAL
 7. LANES
 8. FT
 9. SFAC
10. CFAC
11. TRK_RSTRCT
12. HOV_LYEAR
13. OP_PROJ
14. REL_LN
15. SEL_LINK
16. LINKID
17. TAZID
18. SEGID
19. SUBAREAID
20. HOT_ZONEID
21. HOT_CHRGPT
22. RMPGPID
23. MANFWYID
24. FTCLASS
25. URBANVAL
26. AREATYPE
27. ATYPENAME
28. ATYPEGRP
29. LANE_MILE
30. ANGLE
31. DIRECTION
32. IB_OB
33. PKDIRPRD
34. CO_TAZID
35. CO_FIPS
36. CO_NAME
37. CITY_FIPS
38. CITY_UGRC
39. CITY_NAME
40. DISTLRG
41. DLRG_NAME
42. DISTMED
43. DMED_NAME
44. DISTSML
45. DSML_NAME
46. REMM
47. CBD
48. CAP1HR1LN
49. RELCAP1HR

--- Capacity by Period ---
50. AM_CAP
51. MD_CAP
52. PM_CAP
53. EV_CAP
54. ADHOVCAP1H

--- Ramp Penalties ---
55. FF_RAMPPEN
56. AM_RAMPPEN
57. MD_RAMPPEN
58. PM_RAMPPEN
59. EV_RAMPPEN
60. DY_RAMPPEN

--- HOT/Toll Charges ---
61. HOT_CHRGAM
62. HOT_CHRGMD
63. HOT_CHRGPM
64. HOT_CHRGEV

--- Total Volumes ---
65. AM_VOL
66. MD_VOL
67. PM_VOL
68. EV_VOL
69. DY_VOL
70. DY_VOL2WY
71. DY_1K
72. DY_1K_2WY

--- Volume-to-Capacity Ratios ---
73. AM_VC
74. MD_VC
75. PM_VC
76. EV_VC

--- Auto Congested Speed ---
77. FF_SPD
78. AM_SPD
79. MD_SPD
80. PM_SPD
81. EV_SPD
82. DY_SPD

--- Medium-Duty Truck Speed ---
83. FF_TKSPD_M
84. AM_TKSPD_M
85. MD_TKSPD_M
86. PM_TKSPD_M
87. EV_TKSPD_M
88. DY_TKSPD_M

--- Heavy Vehicle Truck Speed ---
89. FF_TKSPD_H
90. AM_TKSPD_H
91. MD_TKSPD_H
92. PM_TKSPD_H
93. EV_TKSPD_H
94. DY_TKSPD_H

--- Auto Travel Time (minutes) ---
 95. FF_TIME
 96. AM_TIME
 97. MD_TIME
 98. PM_TIME
 99. EV_TIME
100. DY_TIME

--- Medium-Duty Truck Travel Time ---
101. FF_TKTME_M
102. AM_TKTME_M
103. MD_TKTME_M
104. PM_TKTME_M
105. EV_TKTME_M
106. DY_TKTME_M

--- Heavy Vehicle Travel Time ---
107. FF_TKTME_H
108. AM_TKTME_H
109. MD_TKTME_H
110. PM_TKTME_H
111. EV_TKTME_H
112. DY_TKTME_H

--- Vehicle-Miles Traveled (VMT) ---
113. AM_VMT
114. MD_VMT
115. PM_VMT
116. EV_VMT
117. DY_VMT
118. FF_VHT

--- Vehicle-Hours Traveled (VHT) ---
119. AM_VHT
120. MD_VHT
121. PM_VHT
122. EV_VHT
123. DY_VHT

--- Delay (vehicle-hours) ---
124. AM_DELAY
125. MD_DELAY
126. PM_DELAY
127. EV_DELAY
128. DY_DELAY

--- Buffer Time Index ---
129. FF_BTI_TME
130. AM_BTI_TME
131. MD_BTI_TME
132. PM_BTI_TME
133. EV_BTI_TME
134. DY_BTI_TME

--- by Generalized Purpose (PER, EXT, CV, TRK) ---
135. [separator: byGenPurp_]
136. AM_PER
137. AM_EXT
138. AM_CV
139. AM_TRK
140. AM_TOT_GPR
141. MD_PER
142. MD_EXT
143. MD_CV
144. MD_TRK
145. MD_TOT_GPR
146. PM_PER
147. PM_EXT
148. PM_CV
149. PM_TRK
150. PM_TOT_GPR
151. EV_PER
152. EV_EXT
153. EV_CV
154. EV_TRK
155. EV_TOT_GPR
156. DY_PER
157. DY_EXT
158. DY_CV
159. DY_TRK
160. DY_TOT_GPR

--- by Generalized Vehicle Type (DA_NON, SR_NON, HOV, TOL) ---
161. [separator: byGenVeh__]
162. AM_DA_NON
163. AM_SR_NON
164. AM_HOV
165. AM_TOL
166. AM_TOT_GVH
167. MD_DA_NON
168. MD_SR_NON
169. MD_HOV
170. MD_TOL
171. MD_TOT_GVH
172. PM_DA_NON
173. PM_SR_NON
174. PM_HOV
175. PM_TOL
176. PM_TOT_GVH
177. EV_DA_NON
178. EV_SR_NON
179. EV_HOV
180. EV_TOL
181. EV_TOT_GVH
182. DY_DA_NON
183. DY_SR_NON
184. DY_HOV
185. DY_TOL
186. DY_TOT_GVH

--- by Purpose (HBW, HBO, NHB, HBC, HBSch, IX, XI, XX, SLT, SMD, SHV, LMD, LHV) ---
187. [separator: byPURP____]
188. AM_HBW
189. AM_HBO
190. AM_NHB
191. AM_HBC
192. AM_HBS_P
193. AM_HBS_S
194. AM_IX
195. AM_XI
196. AM_XX
197. AM_SLT
198. AM_SMD
199. AM_SHV
200. AM_LMD
201. AM_LHV
202. AM_TOT_PUR
203. MD_HBW
204. MD_HBO
205. MD_NHB
206. MD_HBC
207. MD_HBS_P
208. MD_HBS_S
209. MD_IX
210. MD_XI
211. MD_XX
212. MD_SLT
213. MD_SMD
214. MD_SHV
215. MD_LMD
216. MD_LHV
217. MD_TOT_PUR
218. PM_HBW
219. PM_HBO
220. PM_NHB
221. PM_HBC
222. PM_HBS_P
223. PM_HBS_S
224. PM_IX
225. PM_XI
226. PM_XX
227. PM_SLT
228. PM_SMD
229. PM_SHV
230. PM_LMD
231. PM_LHV
232. PM_TOT_PUR
233. EV_HBW
234. EV_HBO
235. EV_NHB
236. EV_HBC
237. EV_HBS_P
238. EV_HBS_S
239. EV_IX
240. EV_XI
241. EV_XX
242. EV_SLT
243. EV_SMD
244. EV_SHV
245. EV_LMD
246. EV_LHV
247. EV_TOT_PUR
248. DY_HBW
249. DY_HBO
250. DY_NHB
251. DY_HBC
252. DY_HBS_P
253. DY_HBS_S
254. DY_IX
255. DY_XI
256. DY_XX
257. DY_SLT
258. DY_SMD
259. DY_SHV
260. DY_LMD
261. DY_LHV
262. DY_TOT_PUR

--- by Vehicle Lane-Access Type (DAN_PER, SRN_PER, DAN_EXT, DAN_CVT, SR_HOV, DA_TOL, SR_TOL) ---
263. [separator: byVeh_____]
264. AM_DAN_PER
265. AM_SRN_PER
266. AM_DAN_EXT
267. AM_DAN_CVT
268. AM_SR_HOV
269. AM_DA_TOL
270. AM_SR_TOL
271. AM_TOT_VEH
272. MD_DAN_PER
273. MD_SRN_PER
274. MD_DAN_EXT
275. MD_DAN_CVT
276. MD_SR_HOV
277. MD_DA_TOL
278. MD_SR_TOL
279. MD_TOT_VEH
280. PM_DAN_PER
281. PM_SRN_PER
282. PM_DAN_EXT
283. PM_DAN_CVT
284. PM_SR_HOV
285. PM_DA_TOL
286. PM_SR_TOL
287. PM_TOT_VEH
288. EV_DAN_PER
289. EV_SRN_PER
290. EV_DAN_EXT
291. EV_DAN_CVT
292. EV_SR_HOV
293. EV_DA_TOL
294. EV_SR_TOL
295. EV_TOT_VEH
296. DY_DAN_PER
297. DY_SRN_PER
298. DY_DAN_EXT
299. DY_DAN_CVT
300. DY_SR_HOV
301. DY_DA_TOL
302. DY_SR_TOL
303. DY_TOT_VEH

304. [Geometry Field — Shape]

Note: Separator fields (e.g., byGenPurp_) are string-type placeholder fields used as visual dividers in the attribute table; their values are descriptive labels, not numeric data. Actual field ordering and numbering should be confirmed with geopandas or a GIS tool against the live shapefile.

Key Measurement Notes

Calculating Network-Wide Metrics

To compute model-wide or corridor-level performance: - Total VMT: Sum of [PERIOD]_VMT across relevant links - Total VHT: Sum of [PERIOD]_VHT across relevant links - Total Delay: Sum of [PERIOD]_DELAY across relevant links - Average Speed: Total VMT ÷ Total VHT (NOT simple average of link speeds) - Average Delay: Total Delay ÷ Total VHT (in minutes per hour)

Time Period Relationships

  • Daily metrics (DY_*) are computed as sums of the four time-period assignments: DY_VOL = AM_VOL + MD_VOL + PM_VOL + EV_VOL
  • Daily speeds and times are volume-weighted averages of the four period speeds/times
  • When analyzing a full-day corridor profile, use DY_* fields
  • When analyzing peak demand or congestion, use the period-specific AM/MD/PM/EV fields