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。[1]2019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.