The pit lane exit has also been criticised as it fed into the outside of Turn 1, despite original plans for a pit exit running around the outside of the turns 1 and 2 run off area. Although it was off the racing line, if drivers locked up at the turn and ran wide, they could hit someone exiting the pits. This happened during practice for the 2011 Korean Grand Prix when Mercedes' Nico Rosberg ran wide and hit Toro Rosso's Jaime Alguersuari. The exit was criticised by several drivers as well as Mercedes GP's team principal Ross Brawn. He said 'I have to say it's a little frustrating, with a brand new circuit like this, that we have that problem. Look at the number of cars that went off at turn one in first practice. With wet, difficult conditions, I think it was 20 or 30.' Red Bull team principal Christian Horner said it was 'an accident that was going to happen' given the poor design of the exit.' Nico Rosberg and Jarno Trulli also felt that the exit 'needed to be improved'. Following complaints from the drivers, the FIA installed a set of traffic lights at the end of the pit lane, warning drivers rejoining the race of cars approaching at race speeds. Teams also employed the use of spotters to warn drivers (both racing and exiting the pits) of any cars in the pit lane.