A tax is a price control, while cap-and-trade method acts is a quantity control instrument.
2.
I see a real need for the city to work in what we call quantity control.
3.
Another topic of research that Weitzman is well known for is his study of price versus quantity controls.
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:I support both quantity control ( throttling ) and a restriction allowing only autoconfirmed users . talk ) 18 : 57, 19 January 2013 ( UTC)
5.
His research showed that if the slope of marginal costs is steeper, price controls are more effective and if the relative slope of marginal damages is steeper, then quantity controls are more effective.
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