A new Timed Use Permit for personal vehicles along the Waterfall Corridor in the Columbia Gorge goes into effect Tuesday to help reduce congestion, increase safety and improve the overall visitor experience.  Between Tuesday and Labor Day, the Timed Use Permit will be required for personal vehicles to access federal lands adjacent to the Waterfall Corridor between 9 a.m. and 6 p.m., seven days a week, between the Bridal Veil off-ramp at I-84 Exit 28 and Ainsworth State Park at Exit 35.  Multnomah County, Oregon Parks and Recreation Department, the Oregon Department of Transportation and the U.S. Forest Service launched the joint project to create a more reliable, safe, predictable and enjoyable experience for all users visiting trailheads, waterfalls and viewpoints.  In addition to the Waterfall Corridor Timed Use Permits, the Forest Service will reinstate Multnomah Falls Timed Use Permits for visitors using the I-84 Exit 31 parking lot during the same time period.  The permits are two separate systems and are not interchangeable.  The permits can be acquired at recreation.gov.