This is not, however, "induced demand," but rather "induced traffic." The difference between induced traffic and induced demand is that induced traffic is a change in the short-term demand curve, meaning relatively immediate changes in traffic patterns, and not necessarily an overall increase in traffic volume within a given area. What SMC is essentially saying in these two contradictory statements is that induced traffic is certain (the second statement), but that induced demand, the longer-term increase in overall traffic, will not follow. Without that, neither the critics of the Parex nor SMC can say with certainty that the Parex will or will not cause induced demand. However, most studies that report elasticities indicate that a 10 percent increase in capacity would result in at least 5 percent induced traffic."

Source: Manila Times October 11, 2021 14:37 UTC