▁car ▁tracks ▁for ▁competition ▁Many ▁home ▁rac etra cks ▁are ▁made ▁from ▁the ▁injection ▁m old ed - pl astic ▁snap ▁together ▁track ▁sections ▁found ▁in ▁race ▁sets ; ▁these ▁courses ▁are ▁known ▁as ▁" Pl astic ▁Tra cks ". ▁ ▁Sh op ▁and ▁club ▁tracks ▁used ▁for ▁competition ▁( es pecially ▁in ▁ 1 : 3 2 ▁and ▁ 1 : 2 4 ▁scales ) ▁are ▁usually ▁hand ▁built ▁" Rout ed ▁Tra cks " ▁in ▁which ▁the ▁guide ▁sl ots ▁for ▁the ▁entire ▁race course ▁are ▁rout ed ▁into ▁one ▁or ▁a ▁few ▁large ▁pieces ▁of ▁sheet ▁material ▁( such ▁as ▁chip board ▁or ▁Med ium - dens ity ▁fib re board ) ▁providing ▁a ▁smooth ▁and ▁consistent ▁surface . ▁ ▁Compet ition ▁tracks ▁are ▁usually ▁laid ▁out ▁as ▁road ▁courses ▁with ▁many ▁turns , ▁though ▁o val s ▁and ▁" t ank ▁t read " ▁( tra pe zo idal ) ▁o val s ▁are ▁also ▁fairly ▁common . ▁On ▁a ▁road ▁course ▁or ▁o val , ▁each ▁car ▁and ▁each ▁l ane ▁is ▁generally ▁marked ▁with ▁" lane ▁t ape " ▁of ▁a ▁distingu ishing ▁color , ▁allowing ▁the ▁corner ▁mar sh als ▁( o fficial s ) ▁to ▁return ▁cars ▁that ▁have ▁sp un ▁off ▁the ▁track ▁to ▁the ▁proper ▁l ane . ▁ ▁Gener ally , ▁tracks ▁for ▁formal ▁competition ▁may ▁have ▁bank ed ▁corners ▁and ▁may ▁bridge ▁one ▁section ▁over ▁another , ▁but ▁may ▁not ▁otherwise ▁use ▁" tr ick " ▁configurations . ▁Home ▁tracks ▁often