If a project of this scale was proposed in your neighborhood, and the traffic would be dumped down the street you live on, will you be shouting "property rights"? You people are hypocrites.
Also, there is a concept of traffic concurrency, which I'm no genius at understanding, but it basically comes down to calculating the number of trips a project will generate, and whether the existing roads can handle the number of extra trips the proposed project will generate. This ordinance has not been enforced in any real manner for years.
When gridlock comes, and it takes an hour to go from Eastern Lake to Seaside, please shout property rights at the top of your lungs.