In Friday practice a mechanic from the Osella team, Giovanni Amadeo, stumbled off the pitwall into the path of the Williams of Carlos Reutemann.
Before the start of the race the mechanics of all the teams staged a protest over the safety measures protecting them, which was soon joined by several drivers (Villeneuve, Prost, Laffite, Pironi and Scheckter)[2] who left their cars.
The race organisers nevertheless flagged the warm-up lap at the normal time, leaving several cars delayed on the grid, either stalled or with their cockpits vacant.
As a result of these events, a new rule was introduced forbidding mechanics from being on the grid within fifteen seconds of the formation lap, and the race starter would use greater caution.
Pironi had fallen back and after Jones's accident, Reutemann took the lead, keeping it until the race was called off early because of rain starting to fall on the track.