Orange County NC Website
Browse       Search
25 <br /> Appendix B:NCDOT Documents pertaining to rumble strips and bicycle <br /> traffic <br /> •i•.• 44 <br /> • The begnming of a numbie strip/stripe pattern should be delineated.in accordance with <br /> 11,11)TCD criteria(Section 9C )6)on any 1, cillity that bicycles arc legally allowed t.0 <br /> OPerate. <br /> • The NCD• • Division of.Bicycle and Pedestrian Transportation be provided an <br /> °ppm-um ty t.o continent,on any tarot L implementing rumble strips/stripes(.;r11 1.1".1Ci hIL$ <br /> •ADjeCt k)this practice, <br /> • 'Tarn b iih1c i ay continue to the beginning of the 1:1111 width lane,if the Frayed <br /> •hoitidei-vvidth remains the same as the.through-lane shoulder\vi.dth. <br /> • NcDur recognizes and is sensitive to the fact that noise may be an isale, However,if <br /> there is a documented safety problem where no other reasonable cost effective solution is <br /> available then rimilale strips should he insitilled,This approach has been supported <br /> through other Departmental netions„ <br /> (I)Ntill)FRATIONS FOR.BICYCI„E TRAFFIC <br /> The fb)lowing should be considered for all facilities where bicycles are liegully allowed to <br /> imertnct <br /> It is desirable to provide a nominal width of frnir(4)feet of U.Scable shoulder between <br /> outside edge of me ahouldea rumble strip/Stripe to the edge of payment, However,even <br /> though a tour foot nominal width is desired,it will not preclude the installation of a <br /> proven safety countermeasure where there is the presence of treatable lane departure <br /> events, Also,the condition of the,shoulder itself should he consichned in determining <br /> whether or not to provide the kiiir rbut noroirod riding width for bicycle traffic, <br /> • The width o Cshoulder rumble strips/stripe's nosy vary between S and 11.1 inches. "Hie <br /> engineer should determine design and placement. <br /> • Gaps in milled patterns.,varying between 6 and 12 feet,may be provided To allow <br /> bicyclists to move between the through.lane and the right shoulder to avoid yen i.clans, <br /> debt is etc,„but the patteill should be a minimum of a 5:1 rumble-to-gap ratio The <br /> Engineer should determine design arid placement, <br /> • Ni gaps should he provided on the Jell(median)side of ab I de.d higtrways.Gans should <br /> not be provided on interstate or freeway facilities, <br /> • Consideration should be given to the alignment of the roadway in the direction of travel <br /> horn the perspective of incyclists, <br /> * Consideration should be given to the gi ade.rind speed at'which bicyclists army <br /> travctitig, <br /> Effective 35-12 Page 2 of 2 <br />