德国高速公路因极端高温而频繁受损，暴露出基础设施设计与气候现实的严重脱节。今年7月上旬，德国有7段高速公路因热浪完全关闭。1根本原因在于，现有道路设计基于过去30至50年的气候数据，采用的温度范围标准为零下30°C至45°C。1然而气候模型显示，东德部分地区到至少2040年可能超过这一45°C的设计上限。1
尽管多种气候适应型路面技术已被证实可行，德国仍未将其系统纳入法规要求。东京已将反光蓄水路面作为标准应用，可降低路面温度8至10°C，并计划到2030年铺设152英里（245公里）。1凤凰城的浅色涂层路面比传统路面冷6.7°C。12019年的研究还发现，混入浅色石英岩可将沥青温度降低7°C。1
卡尔斯鲁厄技术研究所工程师Nina Stelzenmüller指出："如果你更加重视这个问题，几年内确实可以拥有新型沥青。"1她同时预计新规定的实施至少需要2至3年以上。1这意味着德国升级其基础设施标准的过程将面临明显延滞。
Germany's highway system is suffering damage from extreme heat that current design standards were never built to withstand. In early July, seven motorway sections were completely shut down due to a heat wave, with temperatures exceeding 40°C causing pavement to crack and deform 1. The underlying problem runs deeper than a single weather event: existing road designs are based on climate data from the past 30 to 50 years and do not account for ongoing climate change 1.
Current German road standards are engineered to handle temperature ranges from minus 30°C to 45°C 1. However, climate models indicate that parts of eastern Germany could exceed this 45°C upper limit by at least 2040 1. Despite this trajectory, Germany has not systematically incorporated climate-adapted road technologies into regulatory requirements, even though multiple solutions already exist. Research from 2019 found that light-colored quartz aggregate mixed into asphalt can reduce pavement temperature by 7°C 1. Tokyo has already adopted reflective water-retaining surfaces as standard, capable of lowering road surface temperatures by 8 to 10°C, with plans to install 152 miles (245 kilometers) by 2030 1.
Nina Stelzenmüller, an engineer at Karlsruhe Institute of Technology, stated that "if you place greater priority on this issue, you can indeed have new types of asphalt within a few years" 1. She projected that implementing new regulations would require at least 2 to 3 years or more 1. The gap between available technology and policy adoption highlights how Germany's infrastructure standards have yet to catch up with the climate reality its transportation networks now face.
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