National forests surrounding the high valley include the Cleveland National Forest and the San Bernardino National Forest. Transportation Despite a significant number of the cities and towns being "bedroom communities" with residents commuting to nearby Los Angeles or Orange counties for work, the San Bernardino Valley is an important transportation center to the state and country. Located approximately 70 miles east of the Ports of Los Angeles and Long Beach, a high percentage of goods destined for the rest of the country as well as items on their way out to the world pass through the valley, most of it on trains or trucks. Both Union Pacific and BNSF have tracks that run through the valley. In addition, BNSF has an intermodal transfer facility in San Bernardino. The valley is also crossed by two major interstates and their auxiliaries. Additionally, the communities in the mountains north of the valley are served by several state highways. Mass transit trains and buses both serve the valley. Also, goods and people movement by air is available via two commercial international airports as well as several general aviation air fields. The Greater San Bernardino Area, along with the rest of the Inland Empire, is ranked by Forbes magazine as one of the American's unhealthiest commutes. Highways Interstate Highways San Bernardino Freeway (Interstate 10) Interstate 15 Foothill Freeway (Interstate 210) Interstate 215 State Highways State Route 18 State Route 38 State Route 60 State Route 66 State Route 138 State Route 210 State Route 259 State Route 330 Mass transportation Although a high percentage of valley residents drive their own cars, there are several available options for mass transit. The largest bus agency in the Greater San Bernardino area is Omnitrans, which covers virtually the entire valley. The Omni lines also meet lines for Foothill Transit and Riverside Transit Agency buses, providing connectivity to Riverside County and Los Angeles County. The area is also served by Metrolink's San Bernardino Line and the Inland Empire–Orange County Line. These lines lead to the Los Angeles and San Diego metropolitan areas. Railroad The two main railroads in the valley are Union Pacific (UP) and BNSF. Both have extensive yards in the valley and it is an important area for national movement of goods. UP tracks enter the valley from the south alongside the BNSF tracks in Colton/Grand Terrace. They then continue north until the Colton Crossing, where they