Is a shadow vehicle used in all traffic zones? A. True B. False - False The shadow vehicle is occupied whenever workers are in the work area. A. True B. False - False What class one light is the shadow vehicle equipped with? A. Flashing Yellow Light B. Oscillating Yellow Light C. Yellow Strobe Light D. All of the above - All of the above When may cones be substituted for drums? A. Daytime traffic control minimum height 18" B. Daytime traffic control minimum height 28" C. Daytime traffic control minimum height 36" D. Daytime traffic control minimum height 42" - Daytime traffic control minimum height 28" When may cones be substituted for drums? A. Daytime traffic control minimum height 18" B. Daytime traffic control minimum height 28" C. Daytime traffic control minimum height 36" D. Daytime traffic control minimum height 42" - Daytime traffic control minimum height 28" When cones are substituted for drums for nighttime closers, what is the minimum cone height requirement? A. 18" B. 28" C. 36" D. 42" - 42" When cones are substituted for drums at nighttime closer, what is the maximum cone spacing? A. 20' B. 30'