Related Experiment Video
Updated: Jun 10, 2026

Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
Published on: January 20, 2023
Empirical calibration of a roadside hazardousness index for Spanish two-lane rural roads
José M Pardillo-Mayora1, Carlos A Domínguez-Lira, Rafael Jurado-Piña
1Department of Civil Engineering-Transport, Technical University of Madrid (UPM), C/Profesor Aranguren s/n, 28040 Madrid, Spain. jmpardillo@caminos.upm.es
Abstract:
Crash records and roadside data from Spanish two-lane rural roads were analyzed to study the effect of roadside configuration on safety. Four indicators were used to characterize the main roadside features that have an influence on the consequences of roadway departures: roadside slope, non-traversable obstacles distance from the roadway edge, safety barrier installation, and alignment. Based on the analysis of the effect of roadside configuration on the frequency and severity of run-off-road injury crashes, a categorical roadside hazardousness scale was defined. Cluster analysis was applied to group the combinations of the four indicators into categories with homogeneous effects on run-off-road injury crashes frequency and severity. As a result a 5-level Roadside Hazardousness Index (RHI) was defined. RHI can be used as reference to normalize the collection of roadside safety related information. The index can also be used as variable for inclusion of roadside condition information in multivariate crash prediction models.
More Related Videos
Related Concept Videos
Design Example: Alignment of a Road Line Using GIS
Survey Safety
Hazard Ratio
For example, in a clinical trial evaluating a...
Hypothesis Test for Test of Independence
H0: The two variables (factors)...
Calibration Curves: Linear Least Squares
For data that follow a straight line, the standard method for fitting is the linear...
Hazard Rate

