Enriching Roadside Safety Assessments Using LiDAR Technology: Disaggregate Collision-Level Data Fusion and Analysis
Abstract
:1. Introduction
2. Literature Review
2.1. Pole-Like Object Extraction from LiDAR
2.2. Data Sources in Previous Roadside Safety Assessments
3. Data Collection and Test Segments
4. Methodology
4.1. Feature Extraction
4.1.1. Pole-Like Object Extraction
4.1.2. Side Slope Estimation
4.1.3. Traffic Sign Post Extraction
4.1.4. Curve Detection and Radii Estimation
4.2. Logistic Regression
4.3. Collision-Level Data Fusion Method
5. Results and Discussion
5.1. Variability in Extracted Features
5.2. Safety Assessment
6. Summary and Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Metric 1 | Results on AB-20-02 |
---|---|
Precision (%) | 98 |
Recall (Detection Rate) (%) | 79 |
N | Min | Max | Mean | Std. Deviation | |
---|---|---|---|---|---|
Severity | 100 | 0 | 1 | 0.26 | 0.44 |
Number of Poles | 100 | 0 | 24 | 6.95 | 5.64 |
Average Pole Offset (m) | 94 | 13 | 40 | 25.65 | 5.80 |
Average Pole Spacing (m) | 93 | 15 | 230 | 61.24 | 41.97 |
Tree Canopy Existence | 100 | 0 | 1 | 0.72 | 0.45 |
Average Tree Canopy Offset (m) | 72 | 17 | 45 | 30.07 | 6.37 |
Number of Sign Posts | 100 | 0 | 9 | 3.21 | 3.03 |
Average Sign Spacing (m) | 59 | 1 | 278 | 56.11 | 46.84 |
Existence of a Curve | 100 | 0 | 1 | 0.12 | 0.33 |
Curve Radius (m) | 10 | 599 | 1614 | 972.11 | 300.42 |
Side Slope Flatness (1:x) | 100 | 0 | 37.8 | 6.57 | 7.32 |
Estimate | S.E. a | Wald | df b | p-Value | OR c | |
---|---|---|---|---|---|---|
Minimum Roadside Object Offset | −0.043 | 0.021 | 4.123 | 1 | 0.042 * | 0.958 |
Side Slope Flatness | −0.086 | 0.047 | 3.326 | 1 | 0.068 * | 0.918 |
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Gargoum, S.; Karsten, L.; El-Basyouny, K.; Chen, X. Enriching Roadside Safety Assessments Using LiDAR Technology: Disaggregate Collision-Level Data Fusion and Analysis. Infrastructures 2022, 7, 7. https://doi.org/10.3390/infrastructures7010007
Gargoum S, Karsten L, El-Basyouny K, Chen X. Enriching Roadside Safety Assessments Using LiDAR Technology: Disaggregate Collision-Level Data Fusion and Analysis. Infrastructures. 2022; 7(1):7. https://doi.org/10.3390/infrastructures7010007
Chicago/Turabian StyleGargoum, Suliman, Lloyd Karsten, Karim El-Basyouny, and Xinyu Chen. 2022. "Enriching Roadside Safety Assessments Using LiDAR Technology: Disaggregate Collision-Level Data Fusion and Analysis" Infrastructures 7, no. 1: 7. https://doi.org/10.3390/infrastructures7010007