Here is the full list of all 34 Road Rage trophies - there are 22 bronze, 5 silver, 6 gold and 1 platinum.
Earned all trophies
Finish all story missions
Hit 1000 pedestrians
Hit 500 pedestrians
Collect the Farmlands Collectable
Collect the Forest Collectable
Finished a arcade mission
Hit 50 pedestrians
Collect the Ruscago Airfield Collectable
Buy 5 bikes
Complete upgrade a bike
Collect the Port Hamc Collectable
Finish a sprint mission
Buy 5 weapons
Buy 3 weapons
Buy 5 bike parts
Buy 3 bike parts
Buy a bike part
Collect the Downtown Collectable
Upgrade a bike
Collect the Chitaly Collectable
Hit a pedestrian
Collect the Subtroit Collectable
Outsmarted the cops in escape
Spend more than 10000
Buy a weapon
Buy a new bike
Spend your first money
Spend more than 2000
Spend more than 5000
Win your first circuit race
Finish a stunt mission
Win your first eliminator race
Finished a time trail