A SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. or Element not considered Readable. A SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. or Element may
become Unreadable in specific circumstances, for example at a particular
Distance from the SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed., or in certain ambient lighting conditions.