高速公路护栏设置存在的主要问题就是护栏的防撞能力不足。护栏结构的确定与其设计条件密切相关。护栏的设计条件主要考虑标准车型、车重、碰撞速度、碰撞角度等因素，这些都是由道路条件和交通条件决定的。我国自20世纪末就已开始对全国已通车有代表性的进行了事故调查，交通条件和道路条件调查，并对新型护栏结构进行了大量的研究和实验，取得了一系列的研究成果。对我国的护栏等级进行了明确的划分。桥梁中央的分隔带护栏，防撞能力不足，一般只有75 cm高，难以阻止事故车辆的翻越，很可能形成二次事故。
The main problem of the highway guardrail setting is the lack of Crashworthiness of the guardrail. The determination of guardrail structure is closely related to its design conditions. The design condition of guardrail mainly considers such factors as standard vehicle type, vehicle weight, collision speed and collision angle, which are determined by road conditions and traffic conditions. Since the end of the 20th century, our country has begun to investigate the representative traffic accidents, traffic conditions and road conditions in the whole country. A lot of research and experiments have been carried out on the new guardrail structure, and a series of research results have been achieved. The classification of guardrails in China is clearly defined. The barrier in the center of the bridge is insufficient in anti-collision ability, which is only 75 cm high. It is difficult to prevent the vehicle from overturning, and it is likely to cause a secondary accident.
高速公路防撞护栏是最重要的交通基础设施，我国高速公路是从80年代发展起来的，它对国民经济和社会的发展起着重要的影响作用。是高速公路重要维护和安全保障设施。防撞护栏是高速公路的收尾工程，也是高速公路外观质量的重要组成部分。防撞护栏的内在质量在于原材料及加工过程，它的外观质量取决于施工过程，所以我们一定要不断总结经验，加强施工管理，使防撞护栏的外观质量得以保证。
gāo sù gōng lù fáng zhuàng hù lán shì zuì zhòng yào de jiāo tōng jī chǔ shè shī ，wǒ guó gāo sù gōng lù shì cóng 80nián dài fā zhǎn qǐ lái de ，tā duì guó mín jīng jì hé shè huì de fā zhǎn qǐ zhe zhòng yào de yǐng xiǎng zuò yòng 。shì gāo sù gōng lù zhòng yào wéi hù hé ān quán bǎo zhàng shè shī 。fáng zhuàng hù lán shì gāo sù gōng lù de shōu wěi gōng chéng ，yě shì gāo sù gōng lù wài guān zhì liàng de zhòng yào zǔ chéng bù fèn 。fáng zhuàng hù lán de nèi zài zhì liàng zài yú yuán cái liào jí jiā gōng guò chéng ，tā de wài guān zhì liàng qǔ jué yú shī gōng guò chéng ，suǒ yǐ wǒ men yī dìng yào bú duàn zǒng jié jīng yàn ，jiā qiáng shī gōng guǎn lǐ ，shǐ fáng zhuàng hù lán de wài guān zhì liàng dé yǐ bǎo zhèng 。
