The time that Formula 1 drivers have for their reconnaissance laps to the grid has been reduced from 15 to eight minutes for this year.

The move was in part aimed at giving the drivers more time to get to the grid in time for start of the national anthem ceremony.

This year's sporting rules state that "14 minutes before the scheduled start of the formation lap all drivers must be present at the front of the grid for the playing of the national anthem".

Red Bull driver Ricciardo and Force India's Sergio Perez were seen arriving late to the start of the Chinese anthem.

Both drivers were handed reprimands for the incident.

It is the second reprimand of the year for Perez, while it was Ricciardo's first of 2017.