http://www.th.gov.bc...ents_201203.pdf
5.1. SEGMENT 1: SPENCER ROAD TO WEST SHORE PARKWAY
Existing Conditions
As previously mentioned, this segment is outside the limits of the Malahat but has been included as
part of the review since it is the only undivided section of Highway No. 1 south of the Malahat. This
section of Highway No. 1 transitions from a 4-lane highway to a 3-lane highway with one
northbound lane and two southbound lanes. Existing median barrier is provided on the north
approach of the Spencer Road intersection but terminates approximately 400 m from the new Leigh
Road Overpass. The total length of this segment is 2.3 km.
Safety Performance Measures and Benchmarks
Safety Performance Measures
- Collision Frequency on the Segment = 13.0 collisions per year
- Collision Rate on the Segment = 0.53 collisions per MVKm
- Collision Severity index (CSI) = 5.29
Provincial Safety Benchmarks
- Provincial Average Collision Rate = 0.54 collisions per MVKm
- Critical Collision Rate = 0.62 collisions per MVKm
- Provincial Average CSI = 6.65
Assessment
Even though the safety performance measures indicate that this segment is operating at a level at
or better than Provincial benchmarks, the installation of concrete median barrier in the Leigh road
interchange area in the short term could be considered as it is an area that is already wide enough
to accommodate median barrier with little environmental and or geographic constraints.
Recognizing that the remainder of this section is located in a narrow corridor with significant rock
bluffs on each side, installing median barrier on the remainder of this section may be considered in
the longer term.
Thus they've done what the report has recommended, and a median extending further is many years away.