Synonyms for Signalize (same or very similar meaning)
WordNet sense 1 (provide with traffic signals):
signalise
WordNet sense 2 (communicate silently and non-verbally by signals or signs):
sign, signal
WordNet sense 3 (point out carefully and clearly):
call attention, point out
WordNet sense 4 (make conspicuous or noteworthy):
distinguish
From the ODE community, based on WordNet
add/edit