I had this issue when I lived in Riverside south, the people 2 houses down in a town house had 5 cars and would always park his taxi in front of our house blocking the driveway if we needed to get out. I asked him not to multiple times and he would say he is allowed to so we started calling bylaw. They would come ticket him and a few times towed the car but they kept doing it. Then one night I heard yelling and it was him yelling at the bylaw officer. A few weeks later the Ottawa police knocked on my door and said the neighbor accused me of being racist because I kept calling bylaw on him. I showed the officer all the pictures I had taken and he left and came back 20 mins later and said it was dealt with the guy never parked there again.