Assessment of the coefficient of mechanization level of loading and unloading works was conducted in the paper. It was established that mechanization of loading activities affects the transport efficiency. The coefficient of mechanization index of loading works obtained for small load capacity aggregates (particularly tractor + cart aggregates) is unsatisfactory (e.g. for loose loads 3.71%). In all load groups and for all transport aggregates a higher mechanization index occurs at unloading works, (e.g. loose loads - loading 53.04, unloading 56.85%).
The working time expenditure of transport aggregates is decreasing with increasing efficiency of loading and unloading, which is growing with increasing mechanization of these works. At mechanization index 0% loading works efficiency is 6.55 Mg, whereas at the index 100% - 29.19Mg.
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