Participants

What participants see

The One Less Car app is free on the App Store. When someone opens it for the first time, it walks them through:

1. What the program is and how trips count themselves.
2. Their join code, and a confirmation of the program and employer it joins.
3. Driver, rider or either, and roughly where they commute from.
4. Location access. The app needs Always so it can record drives in the background; it explains why before iOS asks. It records only on the Big Sky corridor roads.
5. Whether to send anonymous drive times to How's the Canyon? (the road conditions app), which helps everyone see how the canyon is moving.
6. Notifications, for when a shared trip is verified and when a reward is earned.

After that, the home screen shows their progress toward this month's reward, their recent trips with a clear "Shared" or "Driven alone" and the reason, the people they ride with, and their rewards.

Getting participants in

• Bring them over from CommuteHub. On Participants, choose the CSV CommuteHub exports for your challenge. Everyone in it with an email gets a one-use welcome link, good for 120 days, that sets them up in the program and in the employer their CommuteHub network names. You get back a mail-merge file (first name, email, link) to send from your own email. The platform keeps no email addresses, only enough to skip anyone already invited if you import again, so delete the file once the emails are out.
• Posters with the employer's code: Employers → Print poster.
• Your newsletter and web page: the app's App Store link and the program code.
• New-hire packets through each employer.
• How's the Canyon? shows a one-time invitation to commuters it recognises, when the app is opened while parked.
• Word of mouth: carpools recruit their own partners, since a shared trip only counts if both people have the app.

Carpools start with people who know each other

The app never introduces strangers. Most carpools already exist, so the app makes it easy to bring a partner along:

• Invite by email. In the app, Invite someone you ride with opens an email from the participant's own mail app with a link. Whoever opens it joins the same program and employer, already paired. The platform never sees the email address.
• Bump phones in the car to pair two people who are both enrolled, or to add a third to an existing carpool.
• Their drives pair them anyway. The first verified shared trip pairs its occupants, so nobody has to do either for a ride to count.

Anyone can unpair or block a partner in the app. A block stops every way of pairing the two again; their shared trips still count, because they still happened. There are no partner reports to program staff.

Questions you will get

Most are answered in Troubleshooting. The two most common:

• "My trip didn't count." Usually because the partner's phone hasn't uploaded yet, or the partner isn't enrolled. The app tells them which.
• "Is it tracking me everywhere?" No. It records only on the Big Sky corridor roads (US-191 between Bozeman and Big Sky and the roads in Big Sky), and their employer never sees their routes.