This a rough diagram of how the accident went. The OPP was facing towards the accident. There is no why he could have not heard or witnessed the accident happening. OPP could have rang a siren, red car could have moved out of the way and the black car would have gotten pulled over.

Today I witnessed a hit and run. A black car speeding through a yellow more close to red hit a silver car who was turning left to enter the freeway. The black car left the scene. What puzzled me was the fact that OPP was in the area and didn't do anything causing the black car to speed away...