Research has been conducted to address the challenges that drivers and passengers face on expressways during emergencies such as traffic accidents and vehicle breakdowns.These challenges include the inability to clearly state their location when calling for help,not knowing the alarm call number or the network alarm entry point,and the lack of coordination regarding rescue status.Relying on technologies such as mobile internet,internet of things,and cloud computing,a smart expressway alarm and rescue solution is proposed.This solution inte-grates front-end QR code positioning with back-end electronic maps to enable"scan code"one-click alarm,road-police linkage,accurate po-sitioning and navigation.The key technologies and innovations are analyzed to ensure expressway travel safety and improve the efficiency of expressway emergency rescue and disposal.
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