apart from the oily man scare, there was another scare in the 60s and 70s that inadvertently kept children at home, especially after dark. this was the rumour circulating around the island that young children had been kidnapped and killed and their heads used for supporting the foundation of some bridge that was being built.
this could have been attributed to the old indian and chinese beliefs that the river-god needed appeasing when man attempted to interrupt its flow by building a bridge across it. to the indians and the chinese, securing the favour of the god could be obtained by making some human sacrifices.
not only were children scared stiff by this story of human heads being needed to ensure the successful completion of a bridge, parents of young children were equally scared. many of them accompanied their young ones to schools and some even stayed to wait until dismissal time so that they could see to their children home safely.
according to my friend, there was yet another belief, this time involving the successful completion of buildings, especially tall buildings. it seemed that during the construction they had to bury 7 types of metal in the ground. burying inanimate objects was nothing frightening as compared to taking away the lives of small children.
incidentally, talking about bridges, there are 4 colour bridges in singapore - white bridge (pek kio), red bridge (ang kio thau, keng lee road), black bridge (orr kio, balestier road) and green bridge (chey kio, ord bridge). i think white bridge was the one along kampong java road, leading to dorset road. there is also orr kio thau (havelock road/ganges road).