Study on the risk of vehicle collisions with roadside slope photovoltaic facilities on expressway

To promote the sustainable development of expressway infrastructure, the new mode of energy integration with photovoltaic installations on expressway mainline slopes has rapidly expanded. This model is conducive to accelerating the implementation of carbon peak actions, while also increasing the risks of roadside environments of expressways. This article studies the impact of slope photovoltaic glare on drivers, proposes the relationship between the glare De Boer coefficient of slope photovoltaics and drivers, and uses LS-DYNA software to comparatively analyze the severity of accidents involving small passenger vehicles colliding with photovoltaics, roadside trees, signs, and piers. the Acceleration Severity Index (ASI) values for collisions with various obstacles at vehicle speeds of 60 km/h, 80 km/h, and 100 km/h are ranked as follows: tree⪅photovoltaic<⪅sign⪅pier, indicating that when an accident vehicle collides with expressway slope photovoltaics, the severity of the accident is greater than when colliding with roadside trees but less severe than colliding with roadside traffic signs. The study also analyzes the collision risks of bus and van with roadside guardrails and slope photovoltaics when the roadside photovoltaic sections are equipped with A-06 and A-17 barriers. Bus collision with A-06, A-17 barriers will cause damage to photovoltaic facilities, but the damage was less severe when colliding with the A-17 barriers. When the van collided with the A-06 guardrail, it caused direct damage to the slope photovoltaic panels. However, when colliding with the A-17 barriers, no direct damage was caused to the slope photovoltaic.