TRUCKMOD is the BTCE's model of the Australian road freight vehcile fleet. It was designed principally to estimate the dynamic effects of policies that alter the distribution of the vehicle task. As far as the BTCE is aware this is the first vintage specific model of the road freight vehicle fleet in Australia. The model covers the period 1991 to 2015. Two possible policy measures to reduce greenhouse gas emissions from road freight vehicles are examined - the accelerated uptake of more fuel efficient vehicle technology and the accelerated retirement of less fuel efficient vehicles. Analysis using TRUCKMOD shows that accelerated vehicle technology uptake would result in a significant reduction in greenhouse gas emissions. Accelerated retirement of less fuel efficient vehicles is a very expensive policy, with a very small reduction in emissions at very high cost
