An explanatory study was carried out to divulge the sources, contamination level of different classes of Polycyclic Aromatic Hydrocarbons (PAHs) distribution and the impact of vehicular traffic on the roadside soil by assessing incremental lifetime cancer risk at each site to understand the potential health risk of nearby residents along the National Highway-2 Delhi–Kolkata India. Comparison of the cancer risk assessment was performed using Monte Carlo simulation for the entire study area. The results revealed 90% cancer risk value of 6.40 × 10⁻⁵ and 6.5 × 10⁻⁵ for children and adults, respectively, whereas, without simulation the Total Cancer Risk (TCR) for adults was 6.925 × 10⁻⁵ and 6.220 × 10⁻⁵ for children, observed maximum at the location (S5). The dilemma of risk assessment indicating profoundly contaminated soil. Comparison of PAHs concentration with the background values of PAHs ranged from 1.478 to 27.493 mg kg⁻¹. The (IP/BgP) ratio specified that the PAHs content of the highway roadside sample is preponderate by diesel vehicle emission, biomass combustion and coal combustion. The study clearly revealed and advocated the influence of organic and inorganic pollution, which aggravates and causes health issues to the nearby inhabitants. This study could also be advantageous to similar consequences seen elsewhere in the world.

通过评估每个站点的终生终生癌症风险，以了解其潜在的健康风险，进行了一项解释性研究，以揭示各种类别的多环芳烃（PAH）分布的来源，污染水平以及车辆交通对路边土壤的影响。印度德里-加尔各答国家2号公路附近的居民。使用蒙特卡洛模拟对整个研究区域进行癌症风险评估的比较。结果显示，儿童和成人的90％癌症风险值分别为6.40×10 ^-5和6.5×10 ^-5，而未经模拟，成人的总癌症风险（TCR）为6.925×10 ^-5和6.220×10 ⁻⁵对于儿童，在该位置观察到最大值（S5）。风险评估的困境表明土壤受到严重污染。PAHs浓度与PAHs背景值的比较范围为1.478至27.493 mg kg ^-1。（IP / BgP）比值表明高速公路路边样品的PAHs含量主要来自柴油车辆排放，生物质燃烧和煤炭燃烧。这项研究清楚地揭示并倡导了有机和无机污染的影响，这种影响加剧并给附近居民造成健康问题。这项研究也可能有益于在世界其他地方看到的类似后果。