What is the effect of a right of way instruction on a driver who makes a left turn?

There are several obvious reasons why any such implication must be avoided. Right of way rules have been described as simply establishing 'a practical basis for necessary courtesy on the highway.' (Pandell v. Hischier, Supra, 166 Cal.App.2d 693, 696, 333 P.2d 762, 764.) The implications of appellants' instruction are inconsistent with this notion. Common sense and the practices of safe drivers do not permit the process of a left turn and the territories involved to be fragmented in the manner anticipated by the proferred instruction.