Those wishing to catch the trolley should arrive at Winter Floral on Washington Street West between Pennsylvania Street and Tennessee Avenue by 11 a.m.
"We encourage people to park under the interstate on Washington Street West," Johnson said.
Santa Claus will not be riding his reindeer into town, but he will be catching a ride on the trolley.
The event will culminate near Kelley's Men's Shop with a Christmas tree lighting ceremony in the lot next to the business between 3 and 4 p.m.
Johnson is asking school children on the West Side to make decorations for the tree, she said.
Children may have their pictures taken with Santa for free, she said.
"This is a great opportunity for the community to come together to support local businesses and enjoy the season," Johnson said.
The event is also designed to illustrate the importance of shopping locally, she said. Dollars spent in local stores tend to stay in the community.
"We really hope the community comes out and supports the local businesses on the West Side," she said.