end of SR 14 at the Newhall Pass interchange. It then crosses the Newhall Pass through the Santa Susana Mountains into the Santa Clarita Valley. I-5's carpool lanes also have direct connectors with the carpool lanes on the SR 170 and SR 14 freeways (an additional direct connector with the HOV lanes on I-405 near Mission Hills is planned.) This allows a continuous HOV lane to run from Palmdale to North Hollywood via SR 14 to I-5 to SR 170. I-5 continues along the western city limits of Santa Clarita and passes Six Flags Magic Mountain, intersecting SR 126 just north of there. The Golden State Freeway then rises sharply, passing by Lake Castaic and undergoing a unique crossover resulting in a left-driving configuration for about before the highway crosses back into its standard alignment. It passes Pyramid Lake and intersects SR 138 before crossing the Tejon Pass through the Tehachapi Mountains, with Path 26 power lines generally paralleling the freeway. After entering Kern County, the freeway sharply descends for from at the Tejon Pass to at Grapevine near the southernmost point of the San Joaquin Valley, approximately south of Bakersfield and south of its interchange with SR 99 at Wheeler Ridge. The stretch of I-5 through the Tejon Pass and Grapevine typically gets snow at higher elevations during the winter. Although Caltrans may require vehicles to use snow tires, snow chains, or other traction devices during and after snowstorms, the California Highway Patrol will instead usually close this segment altogether during these conditions because of the steep grade of the pass, and the amount of passenger traffic and big-rigs that generally use the corridor. Whenever there is such a closure, traffic must either wait for it to reopen, or endure a multi-hour detour. An automated gate on the freeway's median in Castaic north of Lake Hughes Road allows drivers to turn around when such closures occur. Central Valley From SR 99 to Woodland, I-5 is known as the West Side Freeway. I-5 parallels SR 33, skirting along the far more remote western edge of the Central Valley, and is largely removed from the major population centers such as Bakersfield, Fresno and Modesto; other state highways provide connections. I-5 still runs within the vicinity of Avenal, Coalinga, Los Banos, and a handful of other smaller cities on the western edge of the Central Valley. For most of this section, the