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Botts' dots (turtles in Washington and Oregon or buttons in Texas and other southern states) are round non-reflective ceramic [1] raised pavement markers. In many parts of the US, Botts' dots are used, along with reflective raised pavement markers , to mark lanes on highways and arterial roads .
A round, white Botts' dot Main article: Botts' dots Nonreflective raised pavement markers (also known as Botts' dots) are usually round, are white or yellow, and are frequently used on highways and interstates in lieu of painted lines.
Elbert Dysart Botts (January 2, 1893 – April 10, 1962) was the California Department of Transportation (Caltrans) engineer credited with overseeing the research that led to the development of Botts' dots and possibly the epoxy used to attach them to the road.
In California, Botts' dots were commonly used to mark lanes on most freeways from the mid-1960s to the mid-2010s (when the state began to transition away from them and back to using painted lines to divide lanes). Many California cities also use Botts' dots on some (or all) major arterial roads.
In New Zealand, roads are generally marked with white reflective cat's eyes every 10-metres along the centreline, occasionally on high volume roads; both Botts' dots and cat's eyes are used (typically there is one cat's eye followed by three Botts' dots places in every ten-metre stretch of highway). The colour pattern on New Zealand roads is ...
Botts is a surname of European origin. The name refers to: Baker Botts International law firm named for James Addison Baker and Confederate Colonel Walter Browne Botts; Chantal Botts (b. 1976), South African Olympic badminton player; Elbert Dysart Botts (1893–1962), American highway engineer; Jason Botts (b. 1980), American professional ...
See three-way junction 5-1-1 A transportation and traffic information telephone hotline in some regions of the United States and Canada that was initially designated for road weather information. A Access road See frontage road Advisory speed limit A speed recommendation by a governing body. All-way stop or four-way stop An intersection system where traffic approaching it from all directions ...
The Asphaltophone was made from a series of raised pavement markers, similar to Botts' dots, spaced out at intermittent intervals so that as a vehicle passed over the markers, the vibrations caused by the wheels could be heard inside the car. [10] The song played was an arpeggio in the key of F major.