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Table 3
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| Item | Manual method | MMS1-4 | ||||
|---|---|---|---|---|---|---|
| Two-lane rural | Rural interstate | Urban | Two-lane rural | Rural interstate | Urban | |
| Mean collection time for 100 inventory elements in the field, including equipment setup and driving the roadway (person-minutes) | 38 | 40 | 36 | 7 | 9 | 9 |
| 8 | 7 | 10 | ||||
| 8 | 8 | 9 | ||||
| 6 | 7 | 8 | ||||
| Mean in-office processing time for 100 inventory elements (person-minutes) | — | — | — | 5* | 5* | 5* |
| Mean inventory data extraction time for 100 inventory elements, inputting to computer, and creation of inventory database including transfer to GIS (person-minutes) | 45 | 45 | 45 | 76 | 80 | 78 |
| 82 | 77 | 80 | ||||
| 72 | 76 | 77 | ||||
| 84 | 82 | 75 | ||||
| Sum of mean collection, processing, and extraction times | 83 | 85 | 81 | 87 | 92 | 92 |
| One-time purchase of equipment (hardware, software, and peripherals, in dollars | 30,000† | 250,000 and above‡ | ||||
— = Not applicable
* = Approximately the same time for all four methods using vehicle systems
† = Manual method cost includes purchase of vehicle and a computer workstation
‡ = The cost of the methods employing vehicle systems depend on the number and type of sensors installed onboard and varies significantly