WORCESTER - A parking plan shows the city has more than enough available spots within a 5-10 minute walk of Polar Park. The plan, released by the city and the Worcester Red Sox, shows more than 7,300 parking spaces in 24 lots and garages just a few minutes' walk from the park, while stating that fans will only use about 2,500 at full capacity. Half of the lots and garages are owned by the city and will be priced at $5, $10, or $15, depending on their proximity to the ballpark in the Canal District. The private lots will establish their own prices. Traffic engineers expect 10 percent of the fans to use ride share programs, including Uber and Lyft. Another 10 percent will likely use the Commuter Rail into Union Station, which is also a short walk from the ballpark.