1. past tense of signalise; to mark or distinguish as notable or important
Usage: British spelling
2. past tense of signalise; to provide with traffic signals
Usage: British spelling; traffic engineering

Examples

• The intersection was signalised last year to improve traffic flow.
• Her achievements were signalised by the university with a special award.
• The dangerous crossing was finally signalised after numerous accidents.
• The committee signalised the importance of environmental protection.
• All major junctions in the city center have been signalised.
• The report signalised several areas needing immediate attention.