Where is the water drain groove in the subject 2 test vehicle?

[StHarley]

The front windshield water drain groove is located under the front windshield, specifically the plastic guide channel beneath the front wipers. 1. Automobile water drain groove: As a crucial component of the vehicle body system, it serves as the primary drainage pathway for the car body, effectively collecting and discharging rainwater to prevent water ingress into the vehicle interior or cabin. Depending on whether the outlet is positioned at the end or bottom of the groove, automobile water drain grooves can be categorized into side-drainage grooves and bottom-drainage grooves. 2. Function: Typically installed behind the wheel housing of the vehicle body, the water drain groove often incorporates reinforcement plates to enhance the wheel housing's strength. However, these reinforcement plates may obstruct the drainage ports at the ends of side-drainage grooves, impairing their functionality. Creating openings in the reinforcement plates would compromise their structural integrity. In contrast, bottom-drainage grooves feature drainage holes at the base that connect to the external environment and remain unaffected by reinforcement plates. Installing bottom-drainage grooves behind the wheel housing effectively resolves drainage issues.