Curbside collection of yard waste material is costly because the amounts collected per residence are small compared to the total waste stream and time is wasted driving by non-setting-out residences. In this paper, mathematical models are presented capable of estimating route time based on the distribution and amount of materials collected, and route and collection method characteristics. A method is presented that uses route time, set-out rate, and average set-out amount to estimate vehicle and labor requirements for compost curbside collection programs. The effect of collection practice on vehicle and labor needs is also explored. © 1997 ISWA