How can tall roadside weeds create traffic hazards?

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weeding — weed Weeds being removed by hand from a parsley patch.

Tall roadside weeds can create significant traffic hazards primarily by obscuring a driver's visibility. This danger is particularly acute at intersections, where dense or tall vegetation may prevent motorists from seeing oncoming traffic or road signs clearly.1

Because these plants can compromise road safety, they are often managed through weed control measures, such as the application of herbicide chemicals, to ensure clear lines of sight for drivers.1