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<p>The Department produces <strong>annual</strong> figures for bus occupant casualties
in June each year which are based on complete data returns from police forces. <strong>Provisional
quarterly</strong> road casualty statistics however are based on incomplete data returns
from police forces and bus occupants only account for a very small share of road casualties.
Although allowances are made for the missing data, casualty estimates for this group
are subject to higher levels of uncertainty than for the main road user types (car
occupants, motorcyclists, pedal cyclists and pedestrians). Producing separate figures
for bus occupants in the provisional quarterly estimates would result in misleading
figures. Instead a single set of figures are estimated for all other road user types,
including bus occupant, heavy goods vehicle occupants, van occupant, and other casualties.</p><p>
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