Generalized Peak Hour Two-Way Volumes for Florida’s Urbanized Areas 1
TABLE 4
12/18/12
INTERRUPTED FLOW FACILITIES
UNINTERRUPTED FLOW FACILITIES
STATE SIGNALIZED ARTERIALS Class I (40 mph or higher posted speed limit)
FREEWAYS
Lanes
B
C
D
E
4 6 8
4,120 6,130 8,230 10,330 14,450
5,540 8,370 11,100 14,040 18,880
6,700 10,060 13,390 16,840 22,030
7,190 11,100 15,010 18,930 22,860
Lanes Median
B
C
D
E
2 4 6 8
Undivided Divided Divided Divided
* * * *
1,510 3,420 5,250 7,090
1,600 3,580 5,390 7,210
** ** ** **
10 12
Freeway Adjustments
Class II (35 mph or slower posted speed limit)
Auxiliary Lanes Present in Both Directions
Ramp Metering
Lanes Median
B * * * *
C
D
E
2 4 6 8
Undivided Divided Divided Divided
660
1,330 2,920 4,500 6,060
1,410 3,040 4,590 6,130
+ 1,800
+ 5%
1,310 2,090 2,880
Non-State Signalized Roadway Adjustments (Alter corresponding state volumes by the indicated percent.) Non-State Signalized Roadways - 10%
Median & Turn Lane Adjustments
UNINTERRUPTED FLOW HIGHWAYS
Exclusive Left Lanes
Exclusive Right Lanes
Adjustment Factors
Lanes Median
B
C
D
E
Lanes
Median
2 4 6
Undivided Divided Divided
770
1,530 4,660 6,990
2,170 5,900 8,840
2,990 6,530 9,790
2 2
Divided Undivided
Yes No Yes No
No No No No Yes
+5% -20% -5% -25% + 5%
3,300 4,950
Multi Undivided Multi Undivided
–
–
–
Uninterrupted Flow Highway Adjustments
Lanes Median
Exclusive left lanes
Adjustment factors
One-Way Facility Adjustment Multiply the corresponding two-directional volumes in this table by 0.6
2
Divided
Yes Yes No
+5% -5% -25%
Multi Undivided Multi Undivided
BICYCLE MODE 2 (Multiply motorized vehicle volumes shown below by number of directional roadway lanes to determine two-way maximum service volumes.) Paved Shoulder/Bicycle Lane Coverage B C D E 0-49% * 260 680 1,770 50-84% 190 600 1,770 >1,770 85-100% 830 1,770 >1,770 ** PEDESTRIAN MODE 2 (Multiply motorized vehicle volumes shown below by number of directional roadway lanes to determine two-way maximum service volumes.) Sidewalk Coverage B C D E 0-49% * * 250 850 50-84% * 150 780 1,420 85-100% 340 960 1,560 >1,770 BUS MODE (Scheduled Fixed Route) 3 (Buses in peak hour in peak direction) Sidewalk Coverage B C D E 0-84% > 5 ≥ 4 ≥ 3 ≥ 2 85-100% > 4 ≥ 3 ≥ 2 ≥ 1
1 Values shown are presented as peak hour two-way volumes for levels of service and are for the automobile/truck modes unless specifically stated. This table does not constitute a standard and should be used only for general planning applications. The computer models from which this table is derived should be used for more specific planning applications. The table and deriving computer models should not be used for corridor or intersection design, where more refined techniques exist. Calculations are based on planning applications of the Highway Capacity Manual and the Transit Capacity and Quality of Service Manual. 2 Level of service for the bicycle and pedestrian modes in this table is based on number of motorized vehicles, not number of bicyclists or pedestrians using the facility. 3 Buses per hour shown are only for the peak hour in the single direction of the higher traffic flow. * Cannot be achieved using table input value defaults. ** Not applicable for that level of service letter grade. For the automobile mode, volumes greater than level of service D become F because intersection capacities have been reached. For the bicycle mode, the level of service letter grade (including F) is not achievable because there is no maximum vehicle volume threshold using table input value defaults.
Source: Florida Department of Transportation Systems Planning Office www.dot.state.fl.us/planning/systems/sm/los/default.shtm
2012 FDOT QUALITY/LEVEL OF SERVICE HANDBOOK TABLES
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