Chapter 1 - Caltrans - State of California

Chapter 3 Comments and Coordination
Bailard Avenue, northbound U.S. 101 generally operates at LOS C during the AM peak.
During the PM peak, southbound U.S. 101 operates at LOS C between Bailard Avenue at
Bates Road, and at LOS D between Bates Road and Seacliff exit.
Table 2.1-10 illustrates traffic conditions in two counties. Since the project spans two
counties and the traffic conditions are slightly different.
Table 2.1-10 Existing Traffic Conditions by County
U.S 101 Location 2006 AADT
Peak Hour
VPLPH
Average Peak demand
VPHPL
Ventura County (PM39.8/43.6) 74,000 vehicles 7,400 vehicles total 1,850 vehicles per lane E
Santa Barbara County (PM
0.0/2.2)
Source: The Department’s 2007 Traffic Analysis Report
82,000 vehicles 8,200 vehicles total 1,822 vehicles per lane E
As shown in Table 2.1-11, for the purposes of environmental analysis, the worst traffic
condition (82,000 AADT in Santa Barbara County) was used. The average annual peak
month traffic in 2006 was 82,000 vehicles and the peak hour demand was 8,200 vehicles.
The vehicles per hour per lane (VPHPL) was estimated to be 1,822 vehicles, with a
VPHPL capacity of 2,000 vehicles and LOS E which means there is unstable traffic flow,
greatly varied speeds and unpredictable flow. Traffic in the vicinity of the project has an
average of 6-7% truck traffic.
Table 2.1-11 Existing and Future Traffic Volumes with Alternatives
Condition Lanes
EXISTING
2006
NO BUILD
2036
BUILD
2036
4 Mixed
Flow*
4 Mixed
Flow*
4 Mixed
Flow
+ HOV
Average
Annual
Peak
month
Traffic
AM/PM
Peak
Hour
Traffic
Source The Department’s 2007 Traffic Analysis Report
Demand
Vehicles
per hour
per lane
Capacity
Vehicles
per hour
per lane
LOS Vehicle
hours
82,000 8,200 1,822 2,000 E N/A
121,161 12,116 2,692 2,000 F
121,161 12,116 1954 2,200 D
834,165
vehicle
hours
delay
834,165
vehicle
hours
saved
Note: * Existing and NO BUILD Facility accounts for four mixed flow lanes with a short section of 3 mixed flow lanes
northbound between Bates Road and the 101/150 IC and an auxiliary lane within the same southbound section. In the
BUILD scenario the additional mixed flow lane would remain and the auxiliary lane would be converted to a mixed
flow lane. HOV capacity used is 85% of maximum capacity of Mixed Flow lane (2000 VPHPL) or 1700 VPHPL.
The peak month traffic in 2036 is expected to increase by 50 percent to 121,161 vehicles
(AADT) and the peak hour demand is expected to be 12,116 vehicles (peak hour
IS/EA VEN-SB US101 HOV Project 69
LOS