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Federal Highway Administration
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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
REPORT |
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Publication Number: FHWA-HRT-13-097 Date: September 2014 |
Publication Number: FHWA-HRT-13-097 Date: September 2014 |
This appendix provides definitions for all examined variables in the non-network model.
Table 31. Variables and their definitions.
Variable | Definition |
Trip ID | Unique ID for each recorded trip |
SAMPN | Unique household ID |
PERNO | Person ID within a household |
PLANO | Trip plan ID for each person |
MODE | Chosen trip mode
|
DISTANCE | Trip distance. |
auto_cost | Traveling cost by auto. |
bus_cost | Traveling cost by bus (CTA and Pace). |
cta_rail_cost | Traveling cost by CTA. |
metra_cost |
Traveling cost by Metra. |
walk_cost |
Traveling cost by walking (assumed to be zero). |
bike_cost |
Traveling cost by biking (assumed to be zero). |
auto_tt | If auto is the chosen mode, then auto_tt = reported travel time in the survey. Otherwise, auto_tt is obtained from time-dependent origin-destination travel times estimated by a DTA model (DYNASMART). |
bus_tt | If bus (either CTA or PACE) is the chosen mode, the bus_tt = reported travel time in the survey. Otherwise, bus_tt is estimated using an average bus speed obtained from the Household Travel Survey. |
cta_rail_tt | If CTA train is the chosen mode, the cta_rail_tt = reported travel time in the survey. Otherwise, cta_rail_tt is estimated using an average CTA train speed obtained from the Household Travel Survey. |
metra_tt | If Metra is the chosen mode, the metra_tt = reported travel time in the survey. Otherwise, metra_tt is estimated using an average Metra speed obtained from the Household Travel Survey. |
walk_tt | If walking is the chosen mode, the walk_tt = reported travel time in the survey. Otherwise, walk_tt is estimated using an average walking speed obtained from the Household Travel Survey. |
bike_tt | If biking is the chosen mode, the bike_tt = reported travel time in the survey. Otherwise, bike_tt is estimated using an average biking speed obtained from the Household Travel Survey. |
dep_hour | Departure time from origin (hour). |
dep_minute | Departure time from origin (minute). |
arr_hour | Arrival time at destination (hour). |
arr_minute | Arrival time at destination (minute). |
act_dur | Activity duration (minute). |
or_loc | Origin location ID (approximate). |
or_zone07 | Origin TAZ (consistent with CMAP and DYNASMART zoning). |
des_loc | Destination location ID (approximate). |
des_zone07 | Destination TAZ (consistent with CMAP and DYNASMART zoning). |
OR_GN_PURP | Origin purpose:
|
DES_GN_PURP | Destination purpose:
|
purpose | Trip purpose:
|
Income_level | Household annual income:
|
Income | Household annual income (a value from the associated bin is randomly drawn and assigned). |
AGE | Age of the traveler. |
DISAB | Dummy variable for disability status of the traveler:
|
HHVEH | Number of vehicles in the household. |
HHSIZE | Number of persons in the household. |
HHWRK | Number of workers in the household. |
O_MixDiversity1Mile | Land use mix diversity index at origin (see figure 17). The mix diversity index is zero if land use is completely homogenous with only one class. The mix diversity index is one if land use is fully mixed with equal proportion of all included land use classes. |
O_MixDiversity0.5Mile | Land use mix diversity index at origin (0.5-mi circle) |
O_MixDiversity0.25Mile | Land use mix diversity index at origin (0.25-mi circle) |
O_ResComm0.25Mile | Dummy variable for mixed use development at origin (residential + commercial) for 0.25-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
O_ResCommInst0.25Mile | Dummy variable for mixed use development at origin (residential + commercial + institutional) for 0.25-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
O_ResCommInstInds0.25Mile | Dummy variable for mixed use development at origin (residential + commercial + institutional + industrial) for 0.25-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
O_ResComm0. 5Mile | Dummy variable for mixed use development at origin (residential + commercial) for 0.5-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
O_ResCommInst0.5Mile | Dummy variable for mixed use development at origin (residential + commercial + institutional) for 0. 5-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
O_ResCommInstInds0.5Mile | Dummy variable for mixed use development at origin (residential + commercial + institutional + industrial) for 0.5-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
O_ResComm1Mile | Dummy variable for mixed use development at origin (residential + commercial) for 1-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
O_ResCommInst1Mile | Dummy variable for mixed use development at origin (residential + commercial + institutional) for 1-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
O_ResCommInstInds1Mile | Dummy variable for mixed use development at origin (residential + commercial + institutional + industrial) for 1-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
D_MixDiversity1Mile | Land use mix diversity index at destination (1-mi circle). |
O_MixDiversity0.5Mile | Land use mix diversity index at destination (0.5-mi circle). |
O_MixDiversity0.25Mile | Land use mix diversity index at destination (0.25-mi circle). |
D_ResComm0.25Mile | Dummy variable for mixed use development at destination (residential + commercial) for 0.25-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
D_ResCommInst0.25Mile | Dummy variable for mixed use development at destination (residential + commercial + institutional) for 0.25-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
D_ResCommInstInds0.25Mile | Dummy variable for mixed use development at destination (residential + commercial + institutional + industrial) for 0.25-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
D_ResComm0. 5Mile | Dummy variable for mixed use development at destination (residential + commercial) for 0.5-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
D_ResCommInst0.5Mile | Dummy variable for mixed use development at destination (residential + commercial + institutional) for 0. 5-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
D_ResCommInstInds0.5Mile | Dummy variable for mixed use development at destination (residential + commercial + institutional + industrial) for 0.5-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
D_ResComm1Mile | Dummy variable for mixed use development at destination (residential + commercial) for 1-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
D_ResCommInst1Mile | Dummy variable for mixed use development at destination (residential + commercial + institutional) for 1-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
D_ResCommInstInds1Mile | Dummy variable for mixed use development at destination (residential + commercial + institutional + industrial) for 1-mi circle (1 = mixed use developed, 0 = not mixed use developed). |
O_Walk_score | Walk score at origin. |
O_Transit_score | Transit score at origin. |
D_Walk_score | Walk score at destination. |
D_Transit_score | Transit score at destination. |
O_CTA_train_0.25 | Dummy variable for CTA train accessibility at origin (1 = transit accessible, 0 =not transit accessible) for 0.25-mi circle. |
O_CTA_train_0.5 | Dummy variable for CTA train accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.5-mi circle. |
O_CTA_train_0.75 | Dummy variable for CTA train accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.75-mi circle. |
O_CTA_train_1 | Dummy variable for CTA train accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 1-mi circle. |
O_CTA_bus_0.25 | Dummy variable for CTA bus accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.25-mi circle. |
O_CTA_bus_0.5 | Dummy variable for CTA bus accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.5-mi circle. |
O_CTA_bus_0.75 | Dummy variable for CTA bus accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.75-mi circle. |
O_CTA_bus_1 | Dummy variable for CTA bus accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 1-mi circle. |
O_CTA_Metra_0.25 | Dummy variable for Metra accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.25-mi circle. |
O_CTA_ Metra _0.5 | Dummy variable for Metra accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.5-mi circle. |
O_CTA_ Metra _0.75 | Dummy variable for Metra accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.75-mi circle. |
O_CTA_ Metra _1 | Dummy variable for Metra accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 1-mi circle. |
O_CTA_Pace_0.25 | Dummy variable for Pace accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.25-mi circle. |
O_CTA_ Pace _0.5 | Dummy variable for Pace accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.5-mi circle. |
O_CTA_ Pace _0.75 | Dummy variable for Pace accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 0.75-mi circle. |
O_CTA_ Pace _1 | Dummy variable for Pace accessibility at origin (1 = transit accessible, 0 = not transit accessible) for 1-mi circle. |
D_CTA_train_0.25 | Dummy variable for CTA train accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.25-mi circle. |
D_CTA_train_0.5 | Dummy variable for CTA train accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.5-mi circle. |
D_CTA_train_0.75 | Dummy variable for CTA train accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.75-mi circle. |
D_CTA_train_1 | Dummy variable for CTA train accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 1-mi circle. |
D_CTA_bus_0.25 | Dummy variable for CTA bus accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.25-mi circle. |
D_CTA_bus_0.5 | Dummy variable for CTA bus accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.5-mi circle. |
D_CTA_bus_0.75 | Dummy variable for CTA bus accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.75-mi circle. |
D_CTA_bus_1 | Dummy variable for CTA bus accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 1-mi circle. |
D_CTA_Metra_0.25 | Dummy variable for Metra accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.25-mi circle. |
D_CTA_ Metra _0.5 | Dummy variable for Metra accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.5-mi circle. |
D_CTA_ Metra _0.75 | Dummy variable for Metra accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.75-mi circle. |
D_CTA_ Metra _1 | Dummy variable for Metra accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 1-mi circle. |
D_CTA_Pace_0.25 | Dummy variable for Pace accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.25-mi circle. |
D_CTA_ Pace _0.5 | Dummy variable for Pace accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.5-mi circle. |
D_CTA_ Pace _0.75 | Dummy variable for Pace accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 0.75-mi circle. |
D_CTA_ Pace _1 | Dummy variable for Pace accessibility at destination (1 = transit accessible, 0 = not transit accessible) for 1-mi circle. |
O_Violent_0_25 | Number of violent crimes occurring from 2005–2008 in the 0.25-mi radius of the origin latitude and longitude. |
O_Violent_0_50 | Number of violent crimes occurring from 2005–2008 in the 0.50-mi radius of the origin latitude and longitude. |
O_Violent_0_75 | Number of violent crimes occurring from 2005–2008 in the 0.75-mi radius of the origin latitude and longitude. |
O_Violent_1 | Number of violent crimes occurring from 2005–2008 in the 1-mi radius of the origin latitude and longitude. |
O_Index_0_25 | Number of index crimes occurring from 2005–2008 in the 0.25-mi radius of the origin latitude and longitude. |
O_Index_0_50 | Ibid., 0.50-mi radius. |
O_Index_0_75 | Ibid., 0.75-mi radius. |
O_Index_1 | Ibid., 1-mi radius. |
O_NonIndex_0_25 | Number of non-index crimes occurring from 2005–2008 in the 0.25-mi radius of the origin latitude and longitude. |
O_NonIndex_0_50 | Ibid., 0.50-mi radius. |
O_NonIndex_0_75 | Ibid., 0.75-mi radius. |
O_NonIndex_1 | Ibid., 1-mi radius. |
O_IndexTransit_0_25 | Number of index crimes occurring from 2005–2008 at transit stations/shelters in the 0.25-mi radius of the origin latitude and longitude. |
O_IndexTransit_0_5 | Ibid., 0.50-mi radius. |
O_IndexTransit_0_75 | Ibid., 0.75-mi radius. |
O_IndexTransit_1 | Ibid., 1-mi radius. |
O_Prop_0_25 | Number of property crimes occurring from 2005–2008 in the 0.25-mi radius of the origin latitude and longitude. |
O_Prop_0_5 | Ibid., 0.50-mi radius. |
O_Prop_0_75 | Ibid., 0.75-mi radius. |
O_Prop_1 | Ibid., 1-mi radius. |
D_Violent_0_25 | Number of violent crimes occurring from 2005–2008 in the 0.25-mi radius of the destination latitude and longitude. |
D_Violent_0_50 | Number of violent crimes occurring from 2005–2008 in the 0.50-mi radius of the destination latitude and longitude. |
D_Violent_0_75 | Number of violent crimes occurring from 2005–2008 in the 0.75-mi radius of the destination latitude and longitude. |
D_Violent_1 | Number of violent crimes occurring from 2005–2008 in the 1-mi radius of the destination latitude and longitude. |
D_Index_0_25 | Number of index crimes occurring from 2005–2008 in the 0.25-mi radius of the destination latitude and longitude. |
D_Index_0_50 | Ibid., 0.50-mi radius. |
D_Index_0_75 | Ibid., 0.75-mi radius. |
D_Index_1 | Ibid., 1-mi radius. |
D_NonIndex_0_25 | Number of non-index crimes occurring from 2005–2008 in the 0.25-mi radius of the destination latitude and longitude. |
D_NonIndex_0_50 | Ibid., 0.50-mi radius. |
D_NonIndex_0_75 | Ibid., 0.75-mi radius. |
D_NonIndex_1 | Ibid., 1-mi radius. |
D_IndexTransit_0_25 | Number of index crimes occurring from 2005–2008 at transit stations/shelters in the 0.25-mi radius of the destination latitude and longitude. |
D_IndexTransit_0_5 | Ibid., 0.50-mi radius. |
D_IndexTransit_0_75 | Ibid., 0.75-mi radius. |
D_IndexTransit_1 | Ibid., 1-mi radius. |
D_Prop_0_25 | Number of property crimes occurring from 2005–2008 in the 0.25-mi radius of the destination latitude and longitude |
D_Prop_0_5 | Ibid., 0.50-mi radius. |
D_Prop_0_75 | Ibid., 0.75-mi radius. |
D_Prop_1 | Ibid., 1-mi radius. |
OR_Housing_1 | Number of housing units at origin (1-mi circle). |
OR_Pop_1 | Population (head counts) at origin (1-mi circle). |
OR_Jobs_1 | Number of jobs at origin (1-mi circle). |
OR_Area_1 | Associated area at origin (1-mi circle). This area is slightly different from the area of a perfect circle because it is the sum of the areas of the census tracts located within the circle. |
DES_Housing_1 | Number of housing units at destination (1-mi circle). |
DES_Pop_1 | Population (head counts) at destination (1-mi circle). |
DES_Jobs_1 | Number of jobs at destination (1-mi circle). |
DES_Area_1 | Associated area at destination (1-mi circle). |
OR_Housing_0.75 | Number of housing units at origin (0.75-mi circle). |
OR_Pop_0.75 | Population (head counts) at origin (0.75-mi circle). |
OR_Jobs_0.75 | Number of jobs at origin (0.75-mi circle). |
OR_Area_0.75 | Associated area at origin (0.75-mi circle). |
DES_Housing_0.75 | Number of housing units at destination (0.75-mi circle). |
DES_Pop_0.75 | Population (head counts) at destination (0.75-mi circle). |
DES_Jobs_0.75 | Number of jobs at destination (0.75-mi circle). |
DES_Area_0.75 | Associated area at destination (0.75-mi circle). |
OR_Housing_0.5 | Number of housing units at origin (0.5-mi circle). |
OR_Pop_0.5 | Population (head counts) at origin (0.5-mi circle). |
OR_Jobs_0.5 | Number of jobs at origin (0.5-mi circle). |
OR_Area_0.5 | Associated area at origin (0.5-mi circle). |
DES_Housing_0.5 | Number of housing units at destination (0.5-mi circle). |
DES_Pop_0.5 | Population (head counts) at destination (0.5-mi circle). |
DES_Jobs_0.5 | Number of jobs at destination (0.5-mi circle). |
DES_Area_0.5 | Associated area at destination (0.5-mi circle). |
OR_Housing_0.25 | Number of housing units at origin (0.25-mi circle). |
OR_Pop_0.25 | Population (head counts) at origin (0.25-mi circle). |
OR_Jobs_0.25 | Number of jobs at origin (0.25-mi circle). |
OR_Area_0.25 | Associated area at origin (0.25-mi circle). |
DES_Housing_0.25 | Number of housing units at destination (0.25-mi circle). |
DES_Pop_0.25 | Population (head counts) at destination (0.25-mi circle). |
DES_Jobs_0.25 | Number of jobs at destination (0.25-mi circle). |
DES_Area_0.25 | Associated area at destination (0.25-mi circle). |
Bike | Number of bicycles in the households. |
travel_time_index | Travel time index equals actual travel time divided by free-flow travel time. Free-flow travel times are obtained from a DTA Model (DYNASMART) and actual travel time is the “auto_tt.” |
DTA_travel_time_index | DTA travel time index equals DTA travel time divided by free-flow travel time. Free-flow travel times and DTA travel times are both obtained from a DTA Model (DYNASMART). |
OR_PopDensity_1 | Population density at origin (1-mi circle). |
OR_JobDensity_1 | Job density at origin (1-mi circle). |
DES_PopDensity_1 | Population density at destination (1-mi circle). |
DES_JobDensity_1 | Job density at destination (1-mi circle). |
OR_PopDensity_0.75 | Population density at origin (0.75-mi circle). |
OR_JobDensity_0.75 | Job density at origin (0.75-mi circle). |
DES_PopDensity_0.75 | Population density at destination (0.75-mi circle). |
DES_JobDensity_0.75 | Job density at destination (0.75-mi circle). |
OR_PopDensity_0.5 | Population density at origin (0.5-mi circle). |
OR_JobDensity_0.5 | Job density at origin (0.5-mi circle). |
DES_PopDensity_0.5 | Population density at destination (0.5-mi circle). |
DES_JobDensity_0.5 | Job density at destination (0.5-mi circle). |
OR_PopDensity_0.25 | Population density at origin (0.25-mi circle). |
OR_JobDensity_0.25 | Job density at origin (0.25-mi circle). |
DES_PopDensity_0.25 | Population density at destination (0.25-mi circle). |
DES_JobDensity_0.25 | Job density at destination (0.25-mi circle). |