Writs suspending cases in, and removing them from, ecclesiastical courts for consideration in the king's court. (Heath, Peter. Church and Realm, 1272-1461, 366)

There are two basic categories of prohibitions: Unacceptable Vehicles and Unacceptable Drivers. For example some companies will not accept Porsches. That would be a prohibited vehicle. Another example would be some companies will not accept male drivers under 20 years of age. That would be a prohibited driver. A Prohibition is a type of risk that is unconditionally unacceptable. In other words under no conditions will the Insurance Company accept that risk.