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广深线准高速铁路是我国第一条准高速铁路，其开通前后铁路环境噪声对居民影响程度必将产生变化。通过现场测试，采用铁路环境噪声冲击指数，分析评价准高速铁路对环境噪声的实际影响。结果表明，广深线准高速铁路开通后，石龙镇敏感地段铁路环境噪声冲击指数有所下降，高噪声居民下降率昼间约为２２．６％，夜间约为２３．２％。
The Guangzhou-Shenzhen line of quasi-high-speed railway is the first quasi-high-speed railway in China. Before and after its opening, the impact of railway environmental noise on residents will surely change. Through the field test, the railway environment noise impact index was used to analyze and evaluate the actual impact of quasi-high speed railway on environmental noise. The results show that after the opening of the Guangzhou-Shenzhen line of quasi-high-speed railway, the impact of railway noise impact index of Shilong Town in the sensitive area has been reduced. The rate of decline of high-noise residents was 22.6% in daytime and 23.2% in night time.