Active Transportation Plan - City of Pomona

Pomona Active Transportation Plan
November 2012
Chapter 3 – Existing Conditions
Table 3-11 provides a list of the most common PCFs for collisions at signalized locations. The
top three PCFs were travel on the wrong side of the road, auto right-of-way violations, and traffic
signals and signs. These three PCFs accounted for 60% of collisions.
TABLE 3-11 – PRIMARY COLLISION FACTORS, 2007-2011
Primary Collision Factor Percent Share Primary Collision Factor Percent Share
Wrong Side of Road 22.4% Other Hazardous Movement 4.1%
Auto Right-of-Way Violation 21.8% Driving Under the Influence 1.8%
Traffic Signals and Signs 15.9% Improper Passing 1.8%
Unknown 14.7% Pedestrian Right-of-Way Violation 1.2%
Improper Turning 8.8% Pedestrian Violation 1.2%
Unsafe Speed 4.7% Unsafe Starting or Backing 1.2%
Source: City of Pomona, 2012
Table 3-12 provides a summary of time of day data for collisions. The time of day was grouped into four
categories: school/business hours (7:00 AM to 4:59 PM), evening hours (5:00 to 8:59 PM), night hours
(9:00 PM to 2:59 AM), and morning hours (3:00 to 6:59 AM). Among bicycle involved collisions, the
greatest proportion of collisions occurred during business hours with 51% of the total, followed by
evening hours. Evening and night hours combined for less than 15% of the total collisions.
TABLE 3-12 – COLLISIONS BY TIME OF DAY
Time of Day
% of Total
7:00 AM to 4:59 PM 51%
5:00 to 8:59 PM 38%
9:00 PM to 2:59 AM 9%
3:00 to 6:59 AM 3%
Source: City of Pomona, 2012
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