The section of Gilman Springs Road that bisects the two parts of the base has undergone major changes at the behest of Scientology. Until the early 1990s, the two parts of the base were accessed via gates on either side of the highway. This presented safety and security problems; moving hundreds of people across the road at meal times posed a hazard to traffic. These issues were tackled by building pedestrian tunnels under the road for staff to use and rebuilding the configuration of the road to narrow it and slow down through traffic. However, a number of accidents have subsequently occurred on that section of road. In 2001, a 16-year-old girl was decapitated by a tractor operated by a Golden Era contractor who was operating it without a valid driver's license. In 2011 a man was killed in a head-on collision outside the compound.