At approximately 4:00 PM, while traveling on Pinole Valley Road, I was driving in the right lane with my young child clearly visible in the back seat. The left lane was open and available for passing, yet the vehicle behind me followed my vehicle at an extremely close and unsafe distance for several blocks. While tailgating, the vehicle repeatedly weaved from side to side within the lane behind me, appearing to pressure me to drive faster despite having an open lane available to pass. The vehicle eventually passed me. A few blocks later, I encountered the same vehicle stopped on the right side of the roadway to pick up a high school student. There was no shoulder, parking area, or other designated safe area to pull over. The vehicle was stopped in the travel lane, obstructing traffic and creating an additional safety hazard. The vehicle had dark-tinted windows, which prevented me from seeing or identifying the driver.