| Variables . | Description . | Statistics of continuous variables . | |||
|---|---|---|---|---|---|
| Min . | Max . | Mean . | Std . | ||
| Outcome1 | Number of conflicts, response variable | 1 | 13 | 1.25 | 0.76 |
| Volume | Number of vehicles detected at the midsection line (veh/30 s) | 4 | 43 | 17.94 | 6.00 |
| Avg_speed | Average speed of vehicles (m/s) | 2.72 | 45.87 | 28.06 | 6.04 |
| Std_speed | Standard deviation of vehicles’ speed (m/s) | 0.52 | 8.50 | 3.07 | 1.16 |
| Cv_speed | Coefficient variation of vehicles’ speed | 0.02 | 1.02 | 0.12 | 0.08 |
| Prop_truck | The proportion of trucks among all vehicles | 0 | 0.93 | 0.21 | 0.23 |
| Diff_V | The difference of volume between subject lane and the adjacent lane (veh/30 s) | −16 | 21 | 0.08 | 6.05 |
| Diff_AvgS | The difference of Avg_speed between subject lane and the adjacent lane (m/s) | −19.09 | 12.96 | −3.57 | 4.17 |
| Diff_StdS | The difference of Std_speed between subject lane and the adjacent lane (m/s) | −7.01 | 4.71 | 0.26 | 1.24 |
| Diff_CvS | The difference of Cv_speed between subject lane and the adjacent lane | −0.47 | 0.76 | 0.02 | 0.66 |
| Diff_Ptruck | The difference of Prop_truck between subject lane and the adjacent lane | −0.83 | 0.9 | 0.16 | 0.25 |
| Variables | Description | Statistics of categorical variables(Proportion of each category) | |||
| Lane type | The type of subject lane (11 = Inner_1: inner lane at six-lane two-way freeway; 12 = Middle_1; 13 = Outer_1; 21 = Inner_2; 22 = Outer_2) | 11: 12.35%; 12: 54.37%; 13: 18.24%; 21: 2.49%; 22: 11.55% | |||
| Time of day | Whether after or before noon (1 = PM, 0 = AM) | 1: 26.34%; 0:73.76% | |||
| Day of week | Day of week indicator (1 = Monday, 2 = Tuesday, 3 = Wednesday, 4 = Thursday, 5 = Friday) | 1: 35.73%; 2: 2.97%; 3: 23.16%; 4: 20.75%; 5: 17.38% | |||
| Outcome2 | Severity of conflict risk (1/2/3: low/medium/high level) | 1: 57.00%; 2: 34.88%; 3: 8.12% | |||
| Variables . | Description . | Statistics of continuous variables . | |||
|---|---|---|---|---|---|
| Min . | Max . | Mean . | Std . | ||
| Outcome1 | Number of conflicts, response variable | 1 | 13 | 1.25 | 0.76 |
| Volume | Number of vehicles detected at the midsection line (veh/30 s) | 4 | 43 | 17.94 | 6.00 |
| Avg_speed | Average speed of vehicles (m/s) | 2.72 | 45.87 | 28.06 | 6.04 |
| Std_speed | Standard deviation of vehicles’ speed (m/s) | 0.52 | 8.50 | 3.07 | 1.16 |
| Cv_speed | Coefficient variation of vehicles’ speed | 0.02 | 1.02 | 0.12 | 0.08 |
| Prop_truck | The proportion of trucks among all vehicles | 0 | 0.93 | 0.21 | 0.23 |
| Diff_V | The difference of volume between subject lane and the adjacent lane (veh/30 s) | −16 | 21 | 0.08 | 6.05 |
| Diff_AvgS | The difference of Avg_speed between subject lane and the adjacent lane (m/s) | −19.09 | 12.96 | −3.57 | 4.17 |
| Diff_StdS | The difference of Std_speed between subject lane and the adjacent lane (m/s) | −7.01 | 4.71 | 0.26 | 1.24 |
| Diff_CvS | The difference of Cv_speed between subject lane and the adjacent lane | −0.47 | 0.76 | 0.02 | 0.66 |
| Diff_Ptruck | The difference of Prop_truck between subject lane and the adjacent lane | −0.83 | 0.9 | 0.16 | 0.25 |
| Variables | Description | Statistics of categorical variables(Proportion of each category) | |||
| Lane type | The type of subject lane (11 = Inner_1: inner lane at six-lane two-way freeway; 12 = Middle_1; 13 = Outer_1; 21 = Inner_2; 22 = Outer_2) | 11: 12.35%; 12: 54.37%; 13: 18.24%; 21: 2.49%; 22: 11.55% | |||
| Time of day | Whether after or before noon (1 = PM, 0 = AM) | 1: 26.34%; 0:73.76% | |||
| Day of week | Day of week indicator (1 = Monday, 2 = Tuesday, 3 = Wednesday, 4 = Thursday, 5 = Friday) | 1: 35.73%; 2: 2.97%; 3: 23.16%; 4: 20.75%; 5: 17.38% | |||
| Outcome2 | Severity of conflict risk (1/2/3: low/medium/high level) | 1: 57.00%; 2: 34.88%; 3: 8.12% | |||
| Variables . | Description . | Statistics of continuous variables . | |||
|---|---|---|---|---|---|
| Min . | Max . | Mean . | Std . | ||
| Outcome1 | Number of conflicts, response variable | 1 | 13 | 1.25 | 0.76 |
| Volume | Number of vehicles detected at the midsection line (veh/30 s) | 4 | 43 | 17.94 | 6.00 |
| Avg_speed | Average speed of vehicles (m/s) | 2.72 | 45.87 | 28.06 | 6.04 |
| Std_speed | Standard deviation of vehicles’ speed (m/s) | 0.52 | 8.50 | 3.07 | 1.16 |
| Cv_speed | Coefficient variation of vehicles’ speed | 0.02 | 1.02 | 0.12 | 0.08 |
| Prop_truck | The proportion of trucks among all vehicles | 0 | 0.93 | 0.21 | 0.23 |
| Diff_V | The difference of volume between subject lane and the adjacent lane (veh/30 s) | −16 | 21 | 0.08 | 6.05 |
| Diff_AvgS | The difference of Avg_speed between subject lane and the adjacent lane (m/s) | −19.09 | 12.96 | −3.57 | 4.17 |
| Diff_StdS | The difference of Std_speed between subject lane and the adjacent lane (m/s) | −7.01 | 4.71 | 0.26 | 1.24 |
| Diff_CvS | The difference of Cv_speed between subject lane and the adjacent lane | −0.47 | 0.76 | 0.02 | 0.66 |
| Diff_Ptruck | The difference of Prop_truck between subject lane and the adjacent lane | −0.83 | 0.9 | 0.16 | 0.25 |
| Variables | Description | Statistics of categorical variables(Proportion of each category) | |||
| Lane type | The type of subject lane (11 = Inner_1: inner lane at six-lane two-way freeway; 12 = Middle_1; 13 = Outer_1; 21 = Inner_2; 22 = Outer_2) | 11: 12.35%; 12: 54.37%; 13: 18.24%; 21: 2.49%; 22: 11.55% | |||
| Time of day | Whether after or before noon (1 = PM, 0 = AM) | 1: 26.34%; 0:73.76% | |||
| Day of week | Day of week indicator (1 = Monday, 2 = Tuesday, 3 = Wednesday, 4 = Thursday, 5 = Friday) | 1: 35.73%; 2: 2.97%; 3: 23.16%; 4: 20.75%; 5: 17.38% | |||
| Outcome2 | Severity of conflict risk (1/2/3: low/medium/high level) | 1: 57.00%; 2: 34.88%; 3: 8.12% | |||
| Variables . | Description . | Statistics of continuous variables . | |||
|---|---|---|---|---|---|
| Min . | Max . | Mean . | Std . | ||
| Outcome1 | Number of conflicts, response variable | 1 | 13 | 1.25 | 0.76 |
| Volume | Number of vehicles detected at the midsection line (veh/30 s) | 4 | 43 | 17.94 | 6.00 |
| Avg_speed | Average speed of vehicles (m/s) | 2.72 | 45.87 | 28.06 | 6.04 |
| Std_speed | Standard deviation of vehicles’ speed (m/s) | 0.52 | 8.50 | 3.07 | 1.16 |
| Cv_speed | Coefficient variation of vehicles’ speed | 0.02 | 1.02 | 0.12 | 0.08 |
| Prop_truck | The proportion of trucks among all vehicles | 0 | 0.93 | 0.21 | 0.23 |
| Diff_V | The difference of volume between subject lane and the adjacent lane (veh/30 s) | −16 | 21 | 0.08 | 6.05 |
| Diff_AvgS | The difference of Avg_speed between subject lane and the adjacent lane (m/s) | −19.09 | 12.96 | −3.57 | 4.17 |
| Diff_StdS | The difference of Std_speed between subject lane and the adjacent lane (m/s) | −7.01 | 4.71 | 0.26 | 1.24 |
| Diff_CvS | The difference of Cv_speed between subject lane and the adjacent lane | −0.47 | 0.76 | 0.02 | 0.66 |
| Diff_Ptruck | The difference of Prop_truck between subject lane and the adjacent lane | −0.83 | 0.9 | 0.16 | 0.25 |
| Variables | Description | Statistics of categorical variables(Proportion of each category) | |||
| Lane type | The type of subject lane (11 = Inner_1: inner lane at six-lane two-way freeway; 12 = Middle_1; 13 = Outer_1; 21 = Inner_2; 22 = Outer_2) | 11: 12.35%; 12: 54.37%; 13: 18.24%; 21: 2.49%; 22: 11.55% | |||
| Time of day | Whether after or before noon (1 = PM, 0 = AM) | 1: 26.34%; 0:73.76% | |||
| Day of week | Day of week indicator (1 = Monday, 2 = Tuesday, 3 = Wednesday, 4 = Thursday, 5 = Friday) | 1: 35.73%; 2: 2.97%; 3: 23.16%; 4: 20.75%; 5: 17.38% | |||
| Outcome2 | Severity of conflict risk (1/2/3: low/medium/high level) | 1: 57.00%; 2: 34.88%; 3: 8.12% | |||
This PDF is available to Subscribers Only
View Article Abstract & Purchase OptionsFor full access to this pdf, sign in to an existing account, or purchase an annual subscription.
