▁a ▁police ▁car ▁or ▁Util ity / B uck et ▁Tru cks . ▁ ▁Pil ot ▁and ▁trailing ▁cars ▁may ▁be ▁required ▁also . ▁Each ▁must ▁have ▁at ▁least ▁one ▁flash ing ▁am ber ▁light ▁( visible ▁ 3 6 0 ▁degrees ▁at ▁) ▁on ▁them . ▁Their ▁purpose ▁is ▁to ▁observe ▁all ▁possible ▁obst acles ▁or ▁imped iments ▁to ▁the ▁swift ▁and ▁safe ▁transfer ▁of ▁the ▁Load ▁between ▁two ▁points ▁and ▁ ▁warn ▁drivers ▁about ▁what ' s ▁approaching . ▁The ▁Le ad ▁Pil ot ▁Car ▁war ns ▁approaching ▁drivers ▁in ▁the ▁opposite ▁l ane , ▁and ▁the ▁trailing ▁car ▁war ns ▁any ▁candidates ▁to ▁over take ▁or ▁pass ▁the ▁Load . ▁The ▁driver ▁of ▁the ▁pilot ▁car ▁must ▁have ▁a ▁ 2 - way ▁radio ▁communication ▁system ▁( o ften ▁C B ▁radio ▁or ▁hand h eld ▁F RS ▁rad ios ) ▁to ▁alert ▁all ▁members ▁of ▁the ▁move ▁about ▁any ▁low ▁brid ges , ▁w ires , ▁obst acles , ▁etc . ▁The ▁driver ▁of ▁the ▁trailing ▁car ▁is ▁responsible ▁for ▁the ▁safety ( ?) ▁while ▁passing ▁obst acles ▁or ▁over t aking ▁slower ▁vehicles . ▁ ▁Pil ot ▁Car ▁Oper ators ▁may : ▁ ▁Perform ▁a ▁Route ▁Survey ▁before ▁the ▁Load ▁is ▁moved ▁ ▁C urb ▁the ▁Pil ot ▁Car ▁to ▁act ▁as ▁a ▁Fl agger ▁ ▁Order ▁the ▁Load ▁stopped ▁for ▁any ▁reason ▁ ▁Use ▁the ▁Pil ot ▁Car ▁to ▁block ▁traffic ▁from ▁passing ▁the ▁load . ▁ ▁Since ▁the ▁driver ▁of ▁the ▁tr uck ▁cannot ▁see ▁the