Modifications have been made to London's Battersea Park Formula E track after a major bump caused problems and a suspension failure in Turn 1 during first practice. The rear pushrod on Jerome d'Ambrosio's Dragon Racing failed after hitting the bump during the opening practice session, prompting race organisers to reprofile the corner ahead of Free Practice 2.
The corner has been narrowed with the addition on Tecpro barriers, so that the cars are guided away from the bump on the exit of the corner. The remainder of the 1.81-mile track is unchanged, though drivers have also complained about a bump in Turn 8. The changes caused a slight delay before practice could resume.
Despite the bumps, the track has received a positive reception from drivers, despite its general narrowness. Stephane Sarrazin was quickest in the openingsession beating home favourite Sam Bird (Virgin Racing) and Audi Sport ABT's Lucas di Grassi to head the field.
Earlier, London Mayor Boris Johnson lapped the circuit in one of the Spark-Renault SRT_01E, declaring "it was so quiet in the car I could hear a squirrel!"