Table 1 - Description, Factor Levels, Coding System, and Basic Statistics of the Explanatory Variables
Table 1 - Description, Factor Levels, Coding System, and Basic Statistics of the Explanatory Variables
| Explanatory d variables | Description | Factor levels | Coding system in GLIM | Min | Max | Mean | Median |
|---|---|---|---|---|---|---|---|
| MODEL 1 | |||||||
| QNMm | Nonmotorcycle flow on major road (nmpd) | QNMm | 14,527 | 50,529 | 31,389 | 32,354 | |
| QNMn | Nonmotorcycle flow on minor road (nmpd) | QNMn | 2,133 | 20,129 | 11,276 | 11,129 | |
| QMm | Motorcycle flow on major road (mpd) | QMm | 5,510 | 21,899 | 12,228 | 10,792 | |
| QMn | Motorcycle flow on minor road (mpd) | QMn | 1,752 | 4,771 | 3,183 | 3,142 | |
| QPED | Pedestrian flow (pedestrians/hour) | QPED | 0 | 235 | 36 | 19 | |
| SPEED | Approach speed (km/hour) | SPEED | 53.00 | 68.00 | 59.57 | 59.50 | |
| LWm | Average lane width on major road (m) | LWm | 3.30 | 4.00 | 3.58 | 3.60 | |
| LWn | Average lane width on minor road (m) | LWn | 3.40 | 4.00 | 3.69 | 3.60 | |
| LNm | Number of lanes on major road (lanes/traffic direction) | LNm | 2 | 5 | 2.6 | 2.0 | |
| LNn | Number of lanes on minor road (lanes/traffic direction) | LNn | 1 | 3 | 1.6 | 2.0 | |
| NL | Number of legs | 2 | (1) 3-legged (2) 4-legged |
1 | 2 | 1.5 | 1.0 |
| SHDW | Average shoulder width on major and minor roads | 3 | (1) SHDW = 0.00 m (2) 0.00 < SHDW ≤ 1.00 m (3) SHDW > 1.00m |
1 | 3 | 1.7 | 2.0 |
| LU | Land-use category | 2 | (1) Noncommercial
area (2) Commercial area |
1 | 2 | 1.7 | 2.0 |
| MODEL 2 | |||||||
| Qmajor | Traffic flow on major road (vehicles/day) | Qmajor | 20,043 | 72,428 | 43,617 | 42,258 | |
| Qmajor | Traffic flow on minor road (vehicles/day) | Qminor | 4,504 | 24,900 | 14,459 | 14,293 | |
| SHD | Average shoulder width on major and minor roads (m) | SHD | 0 | 1.3 | 0.5 | 0.9 |
Key: km = kilometers; m = meters; mpd = motorcycles per day; nmpd = nonmotorcycles per day.