Skip to content
About RITA
Key Officials
Organizational Chart
Do Business with Us
Publications
Laws and Regulations
Communities of Interest
Transportation Planning and Policy Research
Systems Performance Research
Human Factors Research and Applications
Transport, Logistics and Infrastructure Research
Materials Research
Hazardous Materials Research
Vehicles Systems Research
CNS/Traffic Management/Command and Control
Safety Analysis and Risk Management
Contact Us
Directions and Parking
Press Room
Press Releases
Upcoming Press Releases
What's New
RITA Offices
Bureau of Transportation Statistics
Intelligent Transportation Systems
National Transportation Library
Research, Development and Technology
Transportation Safety Institute
University Transportation Centers
Volpe National Transportation Systems Center
Site Map
Bureau of Transportation Statistics Site Map
Intelligent Transportation Systems Subject Index
National Transportation Library Site Map
Research, Development and Technology
Transportation Safety Institute
University Transportation Centers
Volpe National Transportation Systems Center Site Map
About BTS
Events
Laws and Regulations
Organizational Chart
Results
Strategic Plan
Bookstore
Aviation
Economy and Finance
Energy and Environment
Freight
Geospatial Information
International
National Security
Passenger Travel
Safety
All Publications
BTS Press Room
Press Releases
Upcoming Press Releases
What's New
Data and Statistics
Air Carrier Traffic Statistics
Air Fares
Airline On-Time: Search by Flight Number, Airline, or Airport
Border Crossing
Freight Data and Statistics
North American Transborder Freight
Transportation Services Index
TranStats
External Links
Programs
Advisory Council for Transportation Statistics
Airline Data and Statistics
BTS Working Papers
Committee for Transportation Statistics
Commodity Flow Survey
Confidentiality Policy
Economics and Finance
Freight Information
Geographic Information
International
Journal of Transportation and Statistics
Maritime Data Working Group
National Household Travel Survey (NHTS)
National Transportation Library (NTL)
Omnibus Survey
Safety Data Initiative (SDI)
Statistical Policy and Research
TranStats - The Intermodal Tranportation Database
BTS Home
>
Publications
>
Journal of Transportation and Statistics
>
Volume 5 Number 2/3
>
Paper 3
Table 3
Estimated AM Peak Origin Ramp Volume Using Imputation Methodology
Excel
|
CSV
Origin 1
observed
volume
Origin 1
estimated
volume
Percentage
error
Origin 6
observed
volume
Origin 6
estimated
volume
Percentage
error
25
40
–61
197
175
11
23
26
–14
194
201
–4
42
48
–15
211
202
4
23
37
–62
193
194
0
77
85
–11
220
208
6
25
0
NA
173
169
2
29
38
–29
195
200
–2
29
34
–16
188
177
6
48
50
–4
182
162
11
36
22
40
185
182
2
31
41
–33
176
164
7
33
32
4
189
167
12
17
51
–203
200
181
9
17
20
–18
183
181
1
30
43
–44
209
206
1
21
31
–47
173
166
4
21
33
–57
211
212
0
28
30
–8
178
179
–1
13
15
–14
194
203
–5
22
36
–61
157
154
2
19
33
–73
210
192
9
26
36
–38
208
215
–3
14
13
9
216
198
8
27
42
–54
169
173
–2
28
55
–95
191
171
11
16
13
20
187
195
–4
19
29
–53
214
200
7
17
13
23
174
168
4
16
5
67
203
176
13
34
47
–39
217
198
9
15
12
21
198
195
2
16
24
–53
172
158
8
23
52
–125
193
161
17
17
23
–37
203
196
3
23
41
–78
185
178
4
14
7
51
192
196
–2
16
41
–158
215
189
12
24
28
–17
185
184
0
17
18
–6
200
205
–2
26
29
–12
183
192
–5
19
40
–109
160
128
20
28
33
–17
180
193
–7
26
35
–35
223
200
10
26
35
–34
175
180
–3
17
39
–130
195
170
13
24
32
–34
199
201
–1
27
32
–20
216
221
–2
18
7
60
192
209
–9
18
30
–68
184
192
–4
37
33
10
190
193
–2
22
16
26
196
184
6
21
37
–75
185
164
11
20
28
–42
213
181
15
22
18
18
204
204
0
31
58
–88
193
176
9
23
32
–39
187
179
4
36
21
43
226
226
0
23
27
–15
169
183
–8
67
65
3
244
257
–5
25
0
–
207
200
3
21
63
–199
227
194
15
25
27
–9
188
187
1
25
34
–34
222
215
3
22
28
–26
204
197
4
16
40
–151
218
193
11
28
28
–1
214
211
1
24
28
–16
225
225
0
24
40
–68
200
192
4
29
39
–35
203
198
3
42
38
8
167
175
–5
43
51
–19
191
189
1
41
41
0
199
216
–9
Average error: –30
Average error: 3