BOSTON (CBS) – There’s likely to be an increase in traffic on Wednesday, though the people on the road will be on two feet, not four wheels.

Students, parents and school officials from over 275 elementary and middle schools around Massachusetts are expected to participate in International Walk to School Day, also known as iWalk, on Wednesday.

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“Massachusetts continues to be a leader in Safe Routes to School initiatives,” said MassDOT Secretary Richard Davey.

Safe Routes to School is an organization that helps encourage similar practices year round. Events include walking school bus routes, park and walks, Walk Across America, Walk on Wednesdays and bicycle trains.

According to MassDOT, one in eight schools took place in the program in 2013, as iWalk was held in every state. A total of 4,447 schools participated in iWalk last year.

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The event is held as a way for schools to encourage active and healthy transportation. In addition, iWalk aims to teach students about pedestrian safety while decreasing pollution and traffic congestion.

“Our partnerships and programs yield participation across the Commonwealth, creating healthier and more active lifestyles for our youth,” said Davey.

MassDOT said some towns may opt to hold their iWalk on a different day in the event of poor weather conditions on Wednesday morning.

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