Roadside safety is one of the important components of highway systems due to its
considerable rate of high-severity crashes. Traffic barriers play a key role in reducing the …

A horizontal curve's geometric design is considered an important factor in highway
accidents, and simple and spiral curves are regarded as the most common types of …

Downgrades, especially in mountainous areas, are considered to be one of the most
dangerous places on the road, which cause many casualties and financial losses every …

Reverse Horizontal Curves (RHCs) are among the most accident‐prone road points, with
many annual fatalities and injuries. These fatalities can increase dramatically if the RHCs …

These days, alternative interchanges are attracting the attention of transportation agencies
and designers more than ever. Most of the existing interchanges in the US were built in the …

Coinciding horizontal curves and vertical curves leads to an undesirable situation for road
users controlling the vehicle and increases the potential for skidding and roll-over of a …

Rural highway crash analyses have shown that the majority of accidents occur on horizontal
curves where the vehicle is exposed to lateral forces, which increase the probability of …

Horizontal curves as one of the most dangerous places on roads affect the vehicle's
balance, which depends on various factors such as vehicle type and superelevation. Side …

As a type of horizontal curve, the reverse horizontal curves (RHCs) are one of the most
critical types of road locations where many accidents occur due to slippage resulting from …

High collision rates on horizontal curves compared with other roadway elements make them
one of the most critical elements in a transportation network and thus good candidates for …