According to "Delhi Anatomy Act 1957", a person died in a road traffic accident, the body can be said to be unclaimed after.

Unclaimed bodies to be used for anatomical examination.-- (1) Where a person under treatment in a hospital whether established by or vesting in, or maintained by, the Government or any local authority, dies in such hospital and his body is unclaimed, the authorities incharge of such hospital shall, with the least practicable delay repo the fact to the authorised officer and such officer shall then hand over the unclaimed body to the authorities in charge of an approved institution for the purpose of conducting (2) Where a person dies at a hospital other than a hospital referred to in subsection (1) or in a prison and his body is unclaimed, the authorities incharge of such hospital or prison shall, with the least practicable delay, repo the fact to the authorised officer; and the said officer shall hand over the unclaimed body to the authorities in charge of an approved institution for the purpose specified in sub-section (1). Ref: Indiacode.nic.in