ST8201-SY 890602MEDIAN ACCESS
DESIGN EVALUATION
Restricted Left Turn Access
on Denton Tap Between
Sandy Lake and Braewood
FILE COi f
City Council
Briefing Material
Prepared by
Kimley-Horn and Associates, Inc.
12660 Colt Road, Suite 200
Dallas, Texas 75251
214/386-7007
May, 1989
8,~DY ~
6
POTENTIAL SIGNAL e EXISTING SIGNAL
TabLe 1
TRIP IJEIIERATIO# F~IIECAST
Land Use; Density
Daity
Trips
AN Peak Hour
In Out
PH Peak Hour
In Out
1. Service Station; 1 Station 748 11 11 13 13
2. Restaurant; 2,340 SF 470 25 20 25 22
3. Restaurant; 3,780 SF 759 40 32 40 35
4. Restaurant; 4,687 SF 942 50 39 50 44
5. Restaurant; 3,184 SF 640 34 27 34 30
6. Restaurant; 1,505 SF 302 16 13 16 14
7. Retail; 4,144 SF 238 18 8 58 61
8. Retail; 24,748 SF 2,998 53 2~ 415 432
9. Retail; 10,825 SF 1,751 32 14 96 100
10. Supermarket; 58,629 SF 7,358 22 10 264 253
11. Retail; 33,000 SF 3o615 63 27 172 179
12. Medical Office; 16,700 SF 571 15 12 16 44
13. General Office; 40,050 SF 691 79 12 15 77
14. Medical Office; 220,508 SF 7,535 20.._~2 15._.~8 60 584
TOTAL
28,61~ 66--0 40--6 1127~ 1.888
9176-02.Tbl
9176.02 T°410/CD-2 of '89
568 I
1512 '"-"'
101 ~/
JIL
3 F"
t 194 DENTON TAP
'-,,'-- 828 ~)
~ l~ SANDY LAKE
205 ~
2 ~
,~7i
~ 152
· '--- 2 PLANNED MEDIAN
1~ 149 OPENING
255
REQUESTED MEDIAN
OPENING
372 ~
2~ ~
125 DENTON TAP
32 ~
55 BRAEWOOD
1. FULL ACCESS MEDIAN OPENING SPACING
O 4.0 MPH DESIGN SPEED:
MINIMUM = 300 FT.; DESIRABLE = 5,.30 FT.
· REQUEST IS FOR RESTRICTED LEFT-TURN-ONLY
DESIGN, PROVIDING 420 FT. MEDIAN OPENING
SPACING.
2. SAFE SIGHT DISTANCE
O 4.0 MPH DESIGN SPEED - 6 LANE ROADWAY...;,,,,~
A.) 4-20 FT. MINIMUM FOR VEHICLES TURNING
LEFT .FROM MEDIAN.
B.) 4-4-0 FT. MINIMUM FOR VEHICLES' EXITING
RIGHT FROM THE DRIVEWAY.
* REQUEST PROVIDES APPROXIMATELY 700 FT.
SAFE SIGHT DISTANCE FOR EACH MANEUVER.
3. EFFECTIVE LEFT-TURN STORAGE LENGTH
(UNSIGNALIZED OPERATION) USING
PROJECTED 2010 TRAFFIC VOLUMES:
MINIMUM = 200 FT.; DESIRABLE 250 FT.
· REQUEST PROVIDES 225 FT. (9-11 PASSENGER
VEHICLES)~
4-, LEFT-TURN DECELERATION DISTANCE
~ 4.0 MPH DESIGN SPEED:
MINIMUM TO STOP = ,315 FT. ;
MINIMUM TO 15 MPH TURN = 295 FT.
, REQUEST PROVIDES 315 FT. DECELERATION
DISTANCE.