Plastic rumble strips are a type of traffic safety feature that is installed on roads to alert drivers of a change in road conditions or upcoming hazards. They are made of durable plastic material and are designed to create a rumbling sound and vibration when a vehicle drives over them. They are typically used in areas where there is a higher risk of accidents, such as on curves, at intersections, or on the approach to a toll plaza or work zone. One advantage of plastic rumble strips is that they are more durable than traditional rumble strips, which are often made of asphalt and can deteriorate over time.