road safety feature by means of change in tyre noise
Rumble strip Rumble strips, also known as sleeper lines, alert strips, audible lines, sleepy bumps, wake up calls,[1] growlers, drift lines, and drunk bumps, are a road safety feature to alert inattentive drivers of potential danger, by causing a tactile vibration and audible rumbling transmitted through the wheels into the vehicle interior. A rumble strip is applied along the direction of travel following an edgeline or centerline, to alert drivers when they drift from their lane. Rumble strips may also be installed in a series across the direction of travel, to warn drivers of a stop or slowdown ahead, or of an approaching danger spot.
Hurdy-gurdy According to the Oxford English Dictionary, the mid 18th century origin of the term hurdy-gurdy is onomatopoeic in origin, after the repetitive warble in pitch that characterizes instruments with solid wooden wheels that have warped due to changes in humidity or after the sound of the buzzing-bridge.[11] Alternately, the term is thought to come from the Scottish and northern English term for uproar or disorder, hirdy-girdy[7]:41 or from hurly-burly,[7]:40 an old English term for noise or commotion. The instrument is sometimes more descriptively called a wheel fiddle in English, but this term is rarely used among players of the instrument. Another possible derivation is from the Hungarian "hegedÅ±s" (Slovenian variant "hrgadus") meaning a fiddle.[12]