1 Introduction
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To develop mathematical relations for occupation time of vehicles with the conflicting flow of traffic at an uncontrolled intersection and a semicontrolled intersection.
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To compare the occupation time observed at an uncontrolled and a semicontrolled intersections.
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To develop a mathematical model for estimating occupation time of vehicles at an uncontrolled intersection and a semicontrolled intersection under mixed traffic conditions.
2 Review of literature
3 Data collection
Movement type | Total entry volume | TW | Car/jeep | Auto-rickshaw | HV | LCV |
---|---|---|---|---|---|---|
Major towards north (straight) | 1256 | 525 | 211 | 329 | 163 | 28 |
Minor RT | 332 | 186 | 57 | 89 | ||
Minor LT | 284 | 155 | 32 | 93 | 4 | |
Major LT | 202 | 126 | 35 | 41 | ||
Major RT | 404 | 266 | 40 | 82 | 10 | |
Major towards south (straight) | 1945 | 1083 | 260 | 452 | 24 | 26 |
Movement Type | Total entry volume | TW | Car/jeep | Auto-rickshaws | HV | LCV |
---|---|---|---|---|---|---|
Major towards north (straight) | 1080 | 612 | 249 | 208 | 2 | 9 |
Minor RT | 563 | 231 | 151 | 139 | 37 | 5 |
Minor LT | 1203 | 515 | 290 | 265 | 133 | 0 |
Major LT | 676 | 253 | 210 | 144 | 69 | 0 |
Major RT | 1427 | 633 | 353 | 260 | 166 | 15 |
Major towards south (straight) | 650 | 294 | 200 | 147 | 9 | 0 |
4 Data extraction
5 Comparison of occupation time at uncontrolled and semicontrolled intersections
6 Mathematical relations for occupation time of vehicles
Type of movement | Subject vehicle | Occupation time equation |
R
2 value |
---|---|---|---|
RT from major | TW |
\(t_{\text{o}} = 2.105{\text{e}}^{{1.795V_{\text{ct}} }}\)
| 0.89 |
Car |
\(t_{\text{o}} = 2.029{\text{e}}^{{1.955V_{\text{ct}} }}\)
| 0.76 | |
Auto-rickshaw |
\(t_{\text{o}} = 1.704{\text{e}}^{{2.024V_{\text{ct}} }}\)
| 0.90 | |
Aggregate model |
\(t_{\text{o}} = 2.021{\text{e}}^{{1.869V_{\text{ct}} }}\)
| 0.84 | |
RT from minor | TW |
\(t_{\text{o}} = 2.15{\text{e}}^{{1.709V_{\text{ct}} }}\)
| 0.80 |
Car |
\(t_{\text{o}} = 1.919{\text{e}}^{{2.1V_{\text{ct}} }}\)
| 0.88 | |
Auto-rickshaw |
\(t_{\text{o}} = 2.157{\text{e}}^{{2.028V_{\text{ct}} }}\)
| 0.78 | |
Aggregate model |
\(t_{\text{o}} = 2.116{\text{e}}^{{1.856V_{\text{ct}} }}\)
| 0.79 |
Type of movement | Subject vehicle | Occupation time equation |
R
2 value |
---|---|---|---|
RT from major | TW |
\(t_{\text{o}} = 2.929{\text{e}}^{{1.768V_{\text{ct}} }}\)
| 0.75 |
Car |
\(t_{\text{o}} = 1.485{\text{e}}^{{2.38V_{\text{ct}} }}\)
| 0.81 | |
Auto-rickshaw |
\(t_{\text{o}} = 2.22{\text{e}}^{{1.546V_{\text{ct}} }}\). | 74 | |
Aggregate model |
\(t_{\text{o}} = 2.174{\text{e}}^{{1.593V_{\text{ct}} }}\). | 075 | |
RT from minor | TW |
\(t_{\text{o}} = 1.757{\text{e}}^{{1.892V_{\text{ct}} }}\). | 0.81 |
Car |
\(t_{\text{o}} = 2.195{\text{e}}^{{1.616V_{\text{ct}} }}\)
| 0.72 | |
Auto-rickshaw |
\(t_{\text{o}} = 1.832{\text{e}}^{{1.842V_{\text{ct}} }}\). | 84 | |
Aggregate model |
\(t_{\text{o}} = 1.908{\text{e}}^{{1.785V_{\text{ct}} }}\)
| 0.78 |
Movement type | Vehicle types |
F statistics | Inference | |
---|---|---|---|---|
Computed | Tabulated | |||
Major RT | TW, car, and auto-rickshaw | 0.454 | 3.063 | At α = 0.05 and degrees of freedom (DOF) = 138, null hypothesis is accepted |
Minor RT | TW, car, and auto-rickshaw | 3.506 | 3.064 | At α = 0.05 and DOF = 135, null hypothesis is rejected |
Movement type | Vehicle types |
F statistics | Inference | |
---|---|---|---|---|
Computed | Tabulated | |||
Major RT | TW, car, and auto-rickshaw | 2.63 | 3.05 | At α = 0.05 and DOF = 176, null hypothesis is accepted |
Minor RT | TW, car, and auto-rickshaw | 1.95 | 3.06 | At α = 0.05 and DOF = 128, null hypothesis is accepted |