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5.3 Performance of Model 2 (speed) matched 37% of the video clip mean LOS
Auto LOS Models ratings.
Model 2 ranges from LOS A to F, while Model 1 ranges
Exhibit 81 shows how the mean LOS values produced by from LOS B to F. Model 1 fits the video clip data better but
the recommended auto LOS model compare with the does not achieve LOS A for the streets in the video clip sam-
mean LOS values reported by the video lab participants. ple. Model 2 has a significantly poorer fit with the data (but
The HCM-predicted LOS is included as well. The HCM still better than the HCM); however, it does produce LOS A
matched the video labs 26% of the time, while the for nine of the streets in the video clip sample.
proposed auto LOS Model 1 (stops) matched the video Several different sections or time periods of the same street
labs 69% of the time. The alternate proposed auto LOS were used for many of the clips.
Exhibit 81. Evaluation of Proposed Auto LOS Models.
Art Spd Lim Actual Stops Left Ln Med Video HCM Model Model
Clip # Street Class (mph) (mph) (stps/mi) (%) (1,2,3) LOS LOS 1 LOS 2 LOS
61 Rt 50 1 50 28 1.4 100% 0.00 A C B C
56 Sunset Hills Rd 2 40 23 2.0 100% 3.00 A C B A
2 Gallows Road 3 35 35 0.0 100% 3.00 B A B A
65 Lee Hwy 2 40 36 0.0 100% 2.00 B A B A
63 Rt 50 1 50 42 0.0 100% 3.00 B A B A
5 Wilson Blvd 3 35 30 0.0 100% 3.00 B B B A
62 Rt 50 1 50 37 0.0 100% 0.00 B B B A
13 Washington Blvd 3 35 25 0.0 0% 0.00 B B B A
7 Wilson Blvd 3 35 20 0.0 100% 1.00 B C B B
54 Lee Hwy 2 40 25 3.3 100% 2.00 B C B A
53 Prosperity 2 40 19 1.7 100% 3.00 B D B B
6 Clarendon 3 35 18 2.3 100% 1.00 B D B B
10 Washington Blvd 3 35 17 3.8 0% 0.00 B D C C
20 Rt 50 1 50 16 1.8 100% 3.00 B E B C
64 Rt 50 1 50 20 2.0 100% 3.00 B E B B
58 Sunrise Valley Rd 2 40 11 1.7 100% 3.00 B F B C
1 Rt 234 1 50 15 2.0 100% 3.00 B F B C
29 Rt 234 2 40 23 2.0 100% 3.00 C C B A
19 23rd St 4 30 16 5.8 0% 0.00 C C C C
12 Wilson Blvd 3 35 14 4.3 0% 0.00 C D C D
60 Lee Hwy 2 40 15 2.0 100% 2.00 C E B C
21 Rt 50 1 50 20 4.0 100% 3.00 C E C B
8 Wilson Blvd 3 35 14 4.1 100% 1.00 C E C C
52 M St 4 30 8 7.3 0% 0.00 C E D E
55 Braddock Rd 2 40 13 2.2 100% 3.00 C F B C
59 Sunset Hills Rd 2 40 12 4.9 0% 0.00 C F C E
15 Glebe Road 2 40 8 6.0 100% 3.00 C F C D
14 Glebe Road 2 40 11 6.0 100% 3.00 C F C C
57 Sunset Hills Rd 2 40 17 3.3 0% 0.00 D D C D
16 Fairfax Drive 3 35 12 7.3 100% 3.00 D F C C
51 M St 4 30 7 9.1 0% 0.00 D F D E
25 M St 4 30 11 3.7 0% 0.00 E D C D
23 M St 4 30 8 5.6 0% 0.00 E E C E
30 M St 4 30 7 14.5 0% 0.00 F F F E
31 M St 4 30 4 18.0 0% 0.00 F F F F
% Exact Match To Video 100% 26% 69% 37%
% Within 1 LOS of Video 100% 46% 94% 89%
