Evaluates speeds (5)
I believe the answer is:
rates
I believe this is a double definition.
'evaluates' is the first definition.
(rating is a kind of evaluating)
'speeds' is the second definition.
(rate is a kind of speed)
(Other definitions for rates that I've seen before include "(Old) property taxes" , "Esteems, values" , "List of charges" , "Property-based source of local revenue" , "Assesses value of - property taxation system" .)