Bicycle Accident Compensation

Rahul's friend Rohan is cycling down a street when suddenly, a speeding car hits him, breaking his leg. The car's driver, a careless college student named Aarav, flees the scene without stopping or helping Rohan. After Rohan is taken to the hospital, he discovers that the hospital's X-ray machine was old and not maintained properly, which caused further damage to his leg. Rohan has to undergo a costly surgery to repair the damage.

What legal remedy will Rohan be eligible for under the law of Torts? Is it Negligence, Assumption of Responsibility, or something else entirely?