Main St./Horne Roundabout | Valley Metro
Aerial view of Main Street and Horne roundabout.
Aerial view of Main Street and Horne roundabout.

New Roundabout. New Rail.

A new roundabout is now open at Main St./Horne in Mesa.

Roundabouts for intersections that include light rail are designed to help traffic flow smoothly and safely.

A roundabout is not a merge situation; motorists already in the roundabout have the right of way. You must slow down or stop to yield to traffic approaching from the left. Wait for a gap in traffic, then carefully proceed into the roundabout. Keep in mind: light rail travels through the roundabout in a straight line, but the rest of traffic moves in a slow, continuous flow from left to right.

The modern roundabout will also accommodate busses, large transport vehicles, recreational vehicles, and trailers. The Main Street/Horne roundabout design has taken these larger vehicle turning movements into account; there are truck aprons at each intersecting street to allow for a greater turning radius.

Always remember when driving through the roundabout:

  • Slow down
  • Look left
  • Yield to pedestrians and bicyclists
  • Watch for vehicles, light rail trains and emergency vehicles
  • Proceed with caution

Roundabout Navigation – Vehicles

As you approach a roundabout, know where you are going and choose the correct lane to accommodate your travel. Choose the through lane to continue straight, in your current direction of travel. If you’re planning to turn right, stay right when entering the roundabout. If you want to turn left or make a U-turn, use the left turn lanes of the roundabout until you reach your exit.

As a train approaches the roundabout, flashers and bells will activate and crossing gates will come down to block vehicles in the left lane of the roundabout. Drivers wishing to cross the light rail tracks will queue in the lane. Vehicles traveling east or westbound on Main Street will be allowed to continue their travel while the train is crossing through the intersection, in the same east-west direction.

Roundabout Navigation – Pedestrians and Bicyclists

Vehicles must yield to and wait for pedestrians and bicyclists using the roundabout crosswalks. Bicyclists on Main Street approaching the roundabout should exit the bike lanes in the designated areas and continue on the sidewalks to the crosswalks. Upon exiting the roundabout, the bike lanes will continue on Main Street adjacent to the roadway. Pedestrians and bicyclists should always cross at the designated crosswalks as well as look in both directions for oncoming vehicles or light rail trains.

Emergency Vehicles

If an emergency vehicle that is responding to a call enters the roundabout, exit the roundabout when you can and pull over to the right, clearing the way for the emergency vehicle. Don’t stop while in the roundabout.

Community Education

Project team members will be active in the community to help communicate information about the Main Street and Horne Roundabout. If you are interested in speaking to a representative, look for the Valley Metro table at the following upcoming community events.

  • Oct. 27 6:30-9:00 p.m. Ride-in-Movies at the Park, Mountain View Park, 845 N. Lindsay Rd., Mesa
  • Nov. 10 6-8:30 p.m. Ride-in-Movies at the Park, Pioneer Park, 526 E. Main St., Mesa
  • Dec. 15 2:30-5 p.m. CycloMesa WinterFest 2018, Alta Mesa Park, 1910 N. Alta Mesa Dr., Mesa

If you have questions regarding the Main Street and Horne Roundabout or wish to request a presentation to a community group, please contact Michael Book, Community Outreach Coordinator, or (602) 256-5811.

Roundabout Navigation – Vehicles

Roundabout Navigation – Pedestrians and Bicyclists

Roundabout Navigation – Large Vehicles

Roundabout Navigation – Emergency Vehicles