The RAC Rally had formally become an International event in 1951, but Britain's laws precluded the closure of public highways for special stages. This meant that it had to rely on short manoeuvrability tests, regularity sections and night map-reading navigation to find a winner, which made it unattractive to foreign crews.
Rally racing series
Rallying is a form of motor competition that takes place on public or private roads with modified production or specially built road-legal cars. This motorsport is distinguished by running not on a circuit, but instead in a point-to-point format in which participants and their co-drivers drive between set control points (stages), leaving at regular intervals from one or more start points. Rallies may be won by pure speed within the stages or alternatively by driving to a predetermined ideal journey time within the stages.