Sarnia Transit Learn more about Sarnia Transit services including bus service and Rides on Demand. Learn More Cycling in Sarnia Sarnia is a great City to explore by bike, whether cycling along the river, the Howard Watson Trail, or on […] Learn More Municipal Parking Free and paid parking is available at various municipal lots throughout the downtown core, in addition to on street parking […] Learn More Roads and Traffic Learn More Heavy Trucks on Sarnia Roads Learn More