Rolex 24, Hour 12: Fog brings out the caution as the race hits halfway

Just as the 12th hour began, the race was placed under caution at Daytona due to low visibility. The fog, which has been on and off since nightfall, worsened significantly, leaving race control with no choice but to neutralise the field.

Race control delivered a message to the IMSA broadcast explaining that the race is unlikely to return to green anytime soon because the marshals cannot see post-to-post in places.

In terms of managing the field, race control will attempt to keep the race under Full Course Yellow if possible until conditions improve, as placing the race under a red flag would complicate the drive time rules.

During the hour, many teams took the FCY as an opportunity to change their brakes in the pits. Among the cars spotted by cameras receiving attention were the leading Corvette Racing Z06 GT3.Rs in GTD Pro, and the AO Racing 'Rexy' Porsche, which underwent a front and rear brake change, plus a front bumper change.

In terms of the running order with half of the race in the books, the No. 7 Porsche leads the No. 31 Action Express Cadillac in GTP. The No. 6 Porsche has fallen to third.

LMP2 sees AO Racing's No. 99 ORECA running in the lead with the No. 22 United and No. 43 Inter Europol 07s in second and third.GTD Pro sees Paul Miller Racing's BMW out front with the Manthey No. 911 Porsche following on in the train. The two Corvettes after a service are third and fourth.

Corvette leads the charge in GTD. DXDT's car is up front with the defending champions from 13 Autosport, second. Turner's BMW continues to lurk in third.

As we head into the second half of the race, there are five retirements. The RS1 and Wright Motorsports Porsches and the Riley Ford from GTD, plus the AF Corse ORECA from the LMP2 division.

Fingers crossed we get back to green soon.

RESULTS