ITE Journal - May 2020 - 43

Minor
Arterial

Major
Arterial

Collector

Local

Local

Collector

Local

Collector

Major
Arterial

Date

Average

Civic Center
Drive

EB Hamilton
Ave

EB McCoy
Ave

NB Central
Ave

NB Victor
Ave

NB Virginia
Ave

SB Victor
Ave

SB Virginia
Ave

WB
Hamilton
Ave

WB
Collector
San Tomas
Aquino Road

Table 2. Speed Survey Results in miles per hour.

Before

Sep-13

25.6

24.0

29.3

26.2

23.3

25.1

23.4

25.3

24.1

31.0

23.9

After

Dec-13

25.1

23.9

29.0

25.0

22.8

24.1

23.4

24.1

23.9

30.9

23.6

After

Mar-14

25.1

23.8

29.0

25.4

23.2

24.0

23.3

23.9

24.0

30.8

23.7

After

Jun-14

25.1

23.7

29.3

25.4

23.1

24.1

23.3

24.2

23.7

31.0

23.6

After

Oct-14

24.8

23.8

27.0

25.1

22.9

24.0

23.0

24.2

23.7

30.6

23.6

After

Jan-16

25.0

23.7

28.4

25.7

23.1

24.3

22.9

23.8

23.9

30.9

23.6

After

Nov-16

25.1

23.8

28.6

25.3

23.1

24.2

22.9

24.1

24.0

31.3

23.6

After

Dec-17

25.1

24.0

28.6

25.3

23.2

24.2

23.1

23.9

24.2

31.3

23.7

After

Aug-18

25.4

23.8

29.0

25.8

23.0

24.6

23.5

24.3

23.9

32.0

23.7

Ave.

-0.9 %

-1.0 %

-1.0 %

-1.7 %

-1.4 %

-1.9 %

0.5 %

-4.1 %

-0.7 %

3.4 %

-0.8 %

Up/ Down

Down

Down

Down

Down

Down

Down

Up

Down

Down

Up

Down

NB = Northbound, SB = Southbound, EB = Eastbound, WB = Westbound

direction and have a school located on them. The mean speed of
Eastbound McCoy Avenue decreased 1.2 mph (1.9 km/hr) (4.6
percent). At three months northbound and southbound Victor
Avenue mean speeds decreased 1 and 1.2 mph (1.6 and 1.9 km/
hr) (3.9 percent and 4.9 percent), respectively. At six months, the
mean speed of eastbound McCoy Avenue decreased 0.8 mph (3.2
percent). Northbound and southbound Victor Avenue mean speeds
decreased 1.1 and 1.4 mph (1.8 and 2.25 km/hr) (4.4 percent and 5.6
percent), respectively.
After one year mean speeds averaged a 0.8 mph (1.3 km/hr)
decrease and ranged between a 0.3 and 2.3 mph (0.5 and 3.7 km/hr)
decrease. Percentage differences averaged a 2.9 percent decrease and
ranged between a 1.1 and 7.9 percent decrease. Eastbound Hamilton
Avenue showed the largest decreases in mean speed with 2.3 mph
(3.7 km/hr) decrease (7.9 percent). Streets experiencing the next
largest speed decreases were again eastbound McCoy Avenue and
both directions of Victor Avenue. The mean speed of Eastbound
McCoy Avenue decreased 1.1 mph (4.1 percent). Northbound and
southbound Victor Avenue mean speeds decreased 1.1 and 1.1 mph
(4.3 percent and 4.5 percent), respectively.
After three years mean speeds averaged a 0.5 mph (0.8 km/hr)
decrease and ranged between a 1.2 mph (0.8 km/hr) decrease and
a 0.3 mph (0.5 km/hr) increase. Percentage differences averaged a
1.9 percent decrease and ranged between a 4.7 percent decrease and
a 1.1 percent increase. Eastbound Hamilton Avenue showed a 0.7

mph (1.1 km/hr) (2.4 percent) decrease in mean speed. Westbound
Hamilton Avenue experienced a 0.3 mph (0.5 km/hr) (1.1 percent)
increase in mean speed. Streets experiencing the next largest speed
decreases were eastbound McCoy Avenue and both directions
of Victor Avenue. The mean speed of Eastbound McCoy Avenue
decreased 0.9 mph (1.4 km/hr) (3.4 percent). Northbound and
southbound Victor Avenue mean speeds decreased 0.9 and 1.2 mph
(1.4 and 1.9 km/hr) (3.6 percent and 4.7 percent), respectively.
After five years mean speeds averaged a 0.2 mph (0.3 km/hr)
decrease and ranged between a 1 mph (1.6 km/hr) decrease and a 1
mph increase. Percentage differences averaged a 0.9 percent decrease
and ranged between a 4.1 percent decrease and a 3.4 percent increase.
Westbound Hamilton Avenue experienced a 1 mph (3.4 percent)
increase in mean speed. The mean speed of Eastbound McCoy
Avenue decreased 0.4 mph (0.6 km/hr) (1.7 percent). Northbound and
southbound Victor Avenue mean speeds decreased 0.5 and 1 mph
(0.8 km/hr and 1.6 km/hr) (1.9 percent and 4.1 percent), respectively.
Speeds generally decreased and did not creep back to the
original "before" speed. Exceptions are northbound Virginia
Avenue, a collector street, and westbound Hamilton Avenue,
a major arterial. Of all the study street segments northbound
Virginia Avenue and westbound Hamilton Avenue showed both
mean speed decreases and increases over the duration of the study.
Westbound Hamilton Avenue experienced speed increases three
and five years after sign deployment.
w w w .i t e.or g

May 2020

43


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