It is also illegal, you are committing the same infraction that you are trying to stop.
When you move your vehicle onto the shoulder to block someone, you are typically committing the same or similar traffic violations as the person you are trying to stop. Common charges for "shoulder defenders" can include:
- Improper Lane Use or Failure to Maintain Lane.
- Obstructing Traffic or Impeding the Shoulder, which is reserved for emergencies and emergency vehicles.
- Aggressive Driving or Reckless Driving, which can carry much stiffer penalties than a standard passing violation.