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Sub-problem 1c: Analysis of the Signal with Pedestrians and Bicycles

Finally, we will analyze the intersection as a T-intersection, closing the northbound approach. This will allow two exclusive right-turn lanes on the southbound approach within the proposed right of way, since no through movement is now needed. Closing the northbound approach (being considered by the university) also facilitates the consolidating of pedestrians and bicycles to crossing this approach. Results with this new lane configuration are shown below:

Table 11. Improved Museum at Reitz with No NB Approach and Dual SB RT Lanes

 

EB

WB

NB

SB

L

T

R

L

T

R

L

T

R

L

T

R

Queue Existing

62.4

29.7

29.7

0

38.2

38.2

1.1

0

1.1

16.8

0

35.4

Queue Improved

46.2

29.5

-

-

38.1

38.1

-

-

-

11.1

-

15.9

Delay Existing

532.5

17.8

17.8

0

22.0

22.0

27.3

0

27.3

77.0

0

64.9

Delay Improved

218.6

17.8

-

-

21.9

21.9

-

-

-

30.6

-

33.1

LOS Existing

F

B

B

-

C

C

C

-

C

E

-

E

LOS Improved

F

B

B

-

C

C

-

-

-

C

-

C

Intersection Existing

Delay

110.0

LOS

F

Intersection Improved

Delay

53.4

LOS

D

The improved geometry provided to mitigate the pedestrian and bicycle issues, especially as they relate to the heavy right-turning vehicular traffic, shows significant improvement in the operation of the intersection. Overall delays were reduced from 110 sec/veh (LOS F) to 53 sec/veh (LOS D).

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