A SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More that provides the driver with preliminary information about whether
a SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More is On or Off, usually provided where SightingThe process of evaluating the effectiveness of an installed Signal or Element by means of on-site observation of Visibility and Readability. More of that SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More is
inadequate.