Runaway Truck Escape Ramp
The southernmost section of Kanan Dume Road is particularly steep, with an 8% grade over three miles. My kids always ask about the "Escape Ramp" at the bottom of Kanan Dume Road at its intersection with PCH.
The Truck Escape Ramp was built in 1987 after a series of crashes and resulting deaths due to runaway trucks. The escape ramp, or arrester bed, is an 800 foot long, pit in the middle lane of the road filled 2 1/2 feet deep with gravel. The allowable weight limit for trucks on Kanan Dume was also dropped in 1987 from 14,000 to 8,000 lbs.
The arrester bed was renovated in 2014 to make it wider and improve signage. Thankfully we have never seen the escape ramp used, but it is there if it is ever needed.
Tunnel Vision
There are three tunnels on Kanan Dume Road between Latigo Canyon Road and PCH built in the late 1960s to early 1980s. They are affectionately referred to as T-1, T-2 and T-3. T-3 is two-lane tunnel located at approximately 1142-1208 Kanan Road in Agoura Hills, roughly five miles from Highway 101. A short distance later, you will drive through T-2, located just northeast of Rocky Oaks Park. About 2 1/2 miles from T-2 is the T-1 tunnel, just south of the Newton Canyon Backbone Trail trailhead.