TY  - JOUR
PY  - 2021//
TI  - Risk-based calibration of road sag vertical curve design guidelines on undivided highways
JO  - Journal of transportation engineering, Part A: Systems
A1  - Rinaldi, Alessio
A1  - de Santos-Berbel, César
A1  - Bella, Francesco
A1  - Castro, María
SP  - e04021055
EP  - e04021055
VL  - 147
IS  - 10
N2  - Safety in highway geometric design is one of the main goals to be achieved. However, deterministic design criteria do not provide information concerning the risk associated with the design outputs proposed. To yield consistent safety levels, the sag vertical curve design model on undivided highways was calibrated using a reliability-based framework, which allows one to incorporate the uncertainty associated with the model variables. The sag curve design model contemplates the features of vehicle front lighting systems to compute the headlight sight distance (HSD), which must be equal to or greater than the stopping sight distance (SSD). A dataset of 34,238 case studies was generated. Each case study was associated with two values of the risk level, designated as the probability of noncompliance (
LA  - en
SN  - 2473-2907
UR  - http://dx.doi.org/10.1061/JTEPBS.0000572
ID  - ref1
ER  -