The Garda ordered to hold up dangerous driving behaviour (4,4)
I believe the answer is:
road rage
'dangerous driving behaviour' is the definition.
'road rage' can be an answer for 'behaviour' (I have seen 'aggressive behaviour' mean 'road rage' so perhaps 'behaviour' could also mean 'road rage'). I am unsure of the 'dangerous driving' bit.
'the garda ordered to hold up' is the wordplay.
'to hold' says the answer is hidden in the clue (I've seen 'held' mean this).
'up' shows that the letters should be reversed in order (in down clue: letters go upwards).
'egardaor' can be found hidden inside 'the garda ordered'.
'egardaor' back-to-front is 'ROAD RAGE'.
Can you help me to learn more?
(Other definitions for road rage that I've seen before include "traffic hazard" , "Anger when driving" , "Motorway madness?" , "Traffic scene" , "Motorist's aggression" .)