DENVER (CBS4) – About 1,000 people are signed up for Denver’s Bike to Work Day set for Wednesday, but with temperatures hovering around the 100 degree mark, it will be one of the hottest ever.

Denver police and public works are reminding cyclists they must obey traffic laws that include not wearing ear buds or headphones.

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Police say there has been a 51 percent increase in bicycle crashes in the last year.

As for the heat, organizers say the key is to pace yourself.

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“Basically you need to know yourself and know your limits,” was the advice from Emily Williams with Denver Public Works. “Stay hydrated. When you’re riding to work in the morning it’s going to be cooler. Make sure you take plenty of water, wear your helmet and you’re conscious of your own respiratory health.”

If it is too hot to ride, organizers say to just do it another day.

Smoke and health concerns from the Waldo Canyon Fire have prompted Colorado Springs city officials to completely cancel its Bike To Work plans. Those will be rescheduled for sometime in September.

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LINK: Bike To Work Day