Formula 1 teams have changed the rear jacking points of their new-spec cars following an order from the FIA and lessons learned from Billy Monger's horrific crash.
The governing body believes the design of the jacking point on the car Monger hit may have contributed to the severity of the young F4 racer's injuries.
The offending part, located beneath the rear crash structure, had to be redesigned by each team so that it is no longer sharp or projectile-shaped.
FIA safety director Laurent Mekies wrote:
"Following several front-to-rear incidents over the past months in various single-seater categories, the FIA would like all F1 teams to ensure that their rear jacking point designs cannot act aggressively during such an incident.
"Considering the strength, shape and position of the jacking points, they may become one of the initial points of contact in a crash with another car and alter the performance of the crash structure of the other car.
"The use of aggressive designs will not be permitted from the Monaco GP onwards. All jacking points used from that date must first be approved by the FIA technical department."
“Want to win a trackday experience? All you have to do is subscribe to our FREE newsletter HERE”
GALLERY: All the action from Monaco
Keep up to date with all the F1 news via Facebook and Twitter
