N.J. Stat. § 59:5-6: No liability after voluntary release from police custody

a. Neither a public entity nor a public employee is liable for any injury suffered by a motor vehicle driver upon his voluntary release from police custody after reasonable precautions have been taken so that the driver is released in a position of relative safety and refuge following his arrest on a charge of operating a motor vehicle while under the influence of intoxicating liquor or drugs, pursuant to R.S.39:4-50.

b. Neither a public entity nor a public employee is liable for any injury suffered by a motor vehicle occupant upon his voluntary release from police detention after reasonable precautions have been taken so that the occupant is released in a position of relative safety and refuge following the arrest of a motor vehicle driver on a charge of operating a motor vehicle while under the influence of intoxicating liquor or drugs, pursuant to R.S.39:4-50.

L.1989, c.325, s.1.