Possible Clues:

• Back Red in production of larger hit
• Bring up short, perhaps, in a late display of driving
• That's enough to make one see red back there
• By the look of it you may take it as read, by the sound of it
• Set up diverting warning for road-users
• Just involving a peer is a safety device!
• It's OK for one to be in the red
• Lift up delicate part of car
• It's right for one always to be in the red (4, 5)
• Sounds as if one may take it as read back there