The CCTV shows a white lorry, possibly a Mercedes - believed to be the second vehicle involved in the collision - and a black car, similar to a Vauxhall SUV, which is thought to have been the third to hit the 29-year-old victim from Wandsworth.
She was hit by a HGV as she used a pedestrian crossing on Norwood Road in Tulse Hill, south London, shortly before 7am on 11 December, while the lights were green.
Police say the driver failed to stop at the scene and the woman was then hit by a second lorry and two cars.
Two of the drivers have been found and officers have now released images of the other two vehicles as part of their investigation.
The 49-year-old male driver of the first lorry involved has been interviewed under caution.
The driver of the fourth vehicle - a 52-year-old male - was arrested the night after the collision on suspicion of causing death by careless driving. He was taken into police custody and subsequently released under investigation.
The victim, originally from Poland, will be formally identified by her family on Friday as they arrive in the country after being notified of her death.
A post-mortem examination revealed her provisional cause of death to be from multiple injuries.
Acting Detective Sergeant Alastair Middleton said: "We are grateful for all those witnesses who have come forward, but we continue to appeal for anyone who was passing and witnessed the collision and the moments afterwards to contact us immediately.
"Inquiries are continuing to trace the two outstanding vehicles involved. A number of actions, including the recovery of local CCTV footage, are in hand.
"I would urge the two drivers we are yet to trace, come forward and speak with my team."
Anyone with information or footage can contact police on 020 8543 5157 or Crimestoppers anonymously on 0800 555 111.
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