Zion Shuttle System
There are two shuttles lines: one within Zion National Park and one between the entrance to the park and several stops in the town of Springdale. The park shuttle picks up passengers at nine stops (map PDF) with the Zion Canyon Visitor Center serving as the main hub. The Temple of Sinawava is the end of the Scenic Drive and the shuttle turn around point. During the busiest days buses can arrive at the stops every seven minutes. Note that the Scenic Drive is closed to private vehicles when the shuttle is in operation.
There is also a free shuttle system in Springdale that delivers people from their hotels to the park entrance. To minimize congestion, the town shuttle is the best option for visitors with overnight stays at accommodations in Springdale. Anyone staying in Springdale should leave their car at the hotel and use the shuttle instead. Parking within Zion National Park is usually full between 8 and 9 a.m. Don't forget your annual pass or receipts if you've previously entered the park by vehicle.
There are also off-street paid parking lots in Springdale near shuttle stops with hourly and all-day rates that are less than on-street parking.
Visitors are allowed to drive through the park on Highway 9 year round. A wonder of human achievement on Highway 9 makes travel from the Springdale to Mount Carmel Junction. When it was completed in 1930 the Zion-Mount Carmel Tunnel was the longest tunnel of its kind in the country. It was completed to give tourists easier access between Bryce Canyon, Zion and Grand Canyon national parks.
Oversized Vehicles in the Zion-Mount Carmel Tunnel
All vehicles, however, are not allowed to drive through the tunnel and others must pay a special fee to get private time in the tunnel.
People driving motorhomes are required to stop at the entrance station and get their vehicles measured if they plan to drive through the tunnel at any point. If the vehicle will fit in the tunnel a $15 fee must be paid for rangers to shut down traffic in both directions to allow the motorhome to drive through the tunnel without traffic. There are special times of the day when the oversized vehicles are allowed to drive through the tunnel with a permit. Specifications for motorhomes that will fit in the tunnel can be found on the Zion website. Visitors are only allowed to go through the tunnel in vehicles. No pedestrians or bicyclists are allowed in the tunnel.