I got hit by a pickup truck in a walmart parking lot and, he broke my leg. I have no insurance and, he has no insurance.

Walmart has a built in defense that the conduct of some other person cause in whole or in part your damages. Contact a lawyer to see if a personal injury attorney in Miami will take you on. Negligent lighting will be a matter of proofs, but the hill you have ahead is steep.

Good luck to you.

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You may be able to file a claim against wal mart under a premises liability theory. Specifically, the design and/or lighting of the parking lot was insufficient and caused an unreasonably dangerous condition.