Bott's dots, or “round raised pavement markers,” are small bumps lining the centerline or
edge line of a roadway. They are often used on curves where vehicles have a tendency
to deviate outside of the proper lane, risking collision.

Rumble strips are closely spaced raised pavement markers at regular intervals on the roadway that create noise and vibration to the vehicle. Rumble strips can be used to warn drivers of a change in speed limit, before pedestrian crossing, leading up to a residential or school area, and upcoming stop sign or intersection. Rumble strips should be used only in areas where the noise impact would be minimal.

BOTT'S DOTS PAVEMENT MARKER Plastic Non-Reflective Model: KT-601W The bottoms of these markers are configured to produce an excellent structural bond with the pavement, while their strong yet lightweight construction allow for easy installation. Color: white Size: 4 in diameter 3/4" high Shell: plastic color not exactly as shown.	BOTT'S DOTS PAVEMENT MARKER Plastic Non-Reflective Model: KT-601Y The bottoms of these markers are configured to produce an excellent structural bond with the pavement, while their strong yet lightweight construction allow for easy installation. Color: yellow Size: 4 in diameter 3/4" high Shell: plastic
BOTT'S DOTS PAVEMENT MARKER Ceramic Non-Reflective Model: KT-602W Maintenance free ceramic pavement markers feature heat fired glazed surface that promotes self-cleaning and excellent day time visibility. Color: white Size: 4 in diameter 3/4" high Shell: ceramic	BOTT'S DOTS PAVEMENT MARKER   Ceramic Non-Reflective Model: KT-602Y Maintenance free ceramic pavement markers feature heat fired glazed surface that promotes self-cleaning and excellent day time visibility. Color: yellow Size: 4 in diameter 3/4" high Shell: ceramic