Show Weaving Back and Forth Across Highway Causes Many Motor Accidents Marked Lanes Keep Traffic in Proper roper Place White Lines Have Helped Problem Only Part of Roadway Roadway Road- Road Roadway way Used D T tol Th Albert Itu Ersk Unreal Bureau for fol Street Traffic Research An Important causo oC or traffic tr conGestion and n l accidents Is to be b found In the weaving ot of vehicles vehicle over over the tho roadway and n their failure to maintain regular lines Imes This Thia varies a a great deal trout froll city to city b but t rn In no place I Is there an alignment it of traffic that makes make for tor full fuU uso use of ot the thero roadway dv y surface Weaving eIl In and nd out Is caused principally by the th requirement that drivers driven overtaking o slower Blower vehicles ahead allend pass to tho the left letl Permission Is slon sion to pass either cither to tho the right or left would brinG a 1 greAt treat Improve Improve- Improvement ment making It possible for tor lines of traffic to bo be kept regular In alIgnment and to pass alongside along alone side ot of the th adjacent lines linea line with a min mIn- mInImum minimum minimum of ot friction r fro Tho o use ot or while white paint lines to 0 o mark muk tho the tha center of t roadways roadway's has done much both on tho the high high- way tg 1 Wit and city streets to keep drivers on their own of o tho thoro rod road d This same ame method of If f mark mark- markIn marking mark mark-In ing In can be used successfully to traffic in ht line lino on ou each tach side Ido or of the tho th street and to make possible the fullest use of o the llio roadway This full capacity Is especially required at street Int where traffic Is controlled by officers of- of officers of officers or signals it some somo regulation In olI alignment n ment drivers nr- nr arrange ran ar-ran ran range C themselves In such uch a man man- manner manner manner ner that only a traction fraction of or the tho road rond surface Is used At Inter Inter- Intersections Inter sections lanes lanes s should be e parallel with tho the center line lino of ot the roadways os and nd not leS leathan than Ihan nine 9 0 feet foet In width The Tho boundaries of ot these the e lanes lane sho ld ho be of ot white whit paint or 01 some om more durable d substance The Tho Th lines should extend back badat at least one ons on hundred feet from t th s Intersection Drivers should be required to ke keep p with with- withIn withIn in the tho lane lano as marked In this manner the th Intersection will carry carr Its it maximum traffic A roadway seven twenty seven feet In with width will carry three lanes It If each driver keeps In his own 1 lano Where drIvers ore are allowed aliened allo ed the tho same road road- roadway roadway way will rarely carry more mor than two lanes Innes Tho The waving ot of o vehicles on curves has hIlS led to tho the general use of It the center line marker on highways Vehicles tend to cut the curve following tho the line IIno or of cast resistance This type ot of marking can be b developed eloped and used with nith value on city streets which curve cune on on park park- parkway's parkways ways wars and boulevards For the distance that tho the roadway curves lanes should be marked ten 10 10 feet In veldts fol fol- fol following fol lowinG the Iho he curvature or of o tho center centerline line This method ot or alignment becomes become especially o on heavily lly traveled ways ws as where the normal flow ot of traffic Is reduced by vehicles getting gelling out ct cf line Lines ot of o drivers following following- the th marked lanes will In pass around with as little Interference to other traffic as do railway ay trains passing others upon curves |