Angelina Jolie and Brad Pitt’s son Pax Jolie-Pitt injured in bicycle/car accident

The 20-year-old was driving on Los Feliz Boulevard around 5 p.m. on Monday — a busy road during rush hour — and as he approached a red light, he rammed the back of a car stopped at the intersection … according to law enforcement sources.

We’re told the driver of the car got out to check on Pax, who was not wearing a helmet at the time of the crash. Police and paramedics arrived at the scene and witnesses reported that Pax was experiencing pain in his hip and appeared to have sustained a head injury…so he was taken to a Los Angeles hospital for treatment.

We’re told paramedics feared he suffered a minor brain bleed in the accident, but the latest information is that Pax is in stable condition and could go home later tonight.

Pax – the fourth of Angelina and Brad’s six children – was recently spotted riding a BMX-style electric bike around LA, almost always without a helmet.

Helmet laws in California vary by bike class, so it’s unclear if he needs a helmet on this particular ride. What is clear is that a helmet would have been useful in today’s accident.

Pax has tried his hand at acting, landing a voice role in Kung Fu Panda 3 and an uncredited role in his mother’s Disney film Maleficent.