1. On the map shown in Figure 1, a site will be developed as an office building (Land Use: 701, Weekday Urban Peak Perio

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1 On The Map Shown In Figure 1 A Site Will Be Developed As An Office Building Land Use 701 Weekday Urban Peak Perio 1 (63.37 KiB) Viewed 15 times

1 On The Map Shown In Figure 1 A Site Will Be Developed As An Office Building Land Use 701 Weekday Urban Peak Perio 2 (35.09 KiB) Viewed 15 times

1 On The Map Shown In Figure 1 A Site Will Be Developed As An Office Building Land Use 701 Weekday Urban Peak Perio 3 (47.54 KiB) Viewed 15 times

1 On The Map Shown In Figure 1 A Site Will Be Developed As An Office Building Land Use 701 Weekday Urban Peak Perio 4 (43.94 KiB) Viewed 15 times

1. On the map shown in Figure 1, a site will be developed as an office building (Land Use: 701, Weekday Urban Peak Period Parking Demand) with a gross leasable area (x) of 418.25 thousand square feet. Conduct a traffic impact study and a parking study for this site. The time points to be considered are: 1. The present time 2. The time when the development becomes fully operational (3 years from the present time: 3% annual growth of background traffic) 3. A target year set at 7 years from the time when the development becomes operation (1.5% annual growth of background traffic) 15% 40% 30% 50% 50% 1, 12 Site 5% 10% Figure 1 The trip-generation equations are: A.M. peak-hour trips (1): In (T) = 0.8 In (x) + 2 with 90% enter and 10% exit P.M. peak-hour trips (T): In (T) -0.9 In (x) +1 with 15% enter and 85% exit It is likely that signalized control should be placed at the site access point. This T intersection along with intersections I, and I must be analyzed for one-hour in the A.M. and P.M. weekday peak period. New signal timings should be estimated and up to one additional lane per approach may be placed if the approach LOS is worse than a C. Estimates of through traffic at the access point should result from the volumes of intersection 12. All three intersections must operate under compatible cycle lengths so that arterial progression is maintained. The expected modal splits are as follows: Opening time (t+3): 80% drive alone, 20% car pool (occupancy 2.4) Target time (t+10): 60% drive alone, 30% car pool (occupancy 2.0) 10% use rail transit In + + 3 and 1 + 10 distribute volumes per lane so that flow rations are approximately equal.
These model splits should be used in both the traffic impact and the parking study. Figure l includes the expected distribution of traffic. Existing conditions of intersections I and I are shown in Figure 2. (1600) |(1200) 200 150 Green YAR 20 PHASE A (1700) 520 (1800) 600 (1700) 180 ++ 412 3 PHASE B 30 71700) 110 (1800) 450 (1700) PHASE C 30 410 了 |(1200)|(1600) 120 220 NOTES (+*+) - saturation flow, vehicle volume The volumes shown are AM peak. PM peak is 5% heavier along the cast-west routes and 10% lighter along the north-south routes PF = 1.0 for all approaches (1800)|(1700) 4186 i FFU | |(1800) 350 400 400 Green Y-AR PHASE A 20 3 12 (1700) 250 (1700) 250 PHASEB 3 3 (1650) 300 PHASEC TY 15 (1800)|(1800) 110 220 Figure 2
Include HCS outputs of the worst case scenario (A.M. or P.M. peak period) for the operational and target years. Create the same tables as we did in the example problems in class. 2. Does the traffic coming in and out of the site, once built out, need a stop sign or signal lights installed? Why or why not? 3. How many parking lots should there be for the office building? 4. How many handicap parking stalls should you include in the parking for this office building? 5. You, as a Transportation Engineer Planner, want to evaluate how to reduce crash and accidents in the two intersections. First you see if congestion in the two intersections exist initially. If so, how would you decrease the congestion and also what initiatives can you use to reduce any crash and accidents happening and why? Please cite any tables, figures, information, etc. that is used to back up your case. Problem one explanation: Please Use Yellow time as 4 seconds and All Red as 2 seconds instead of what is shown on the hand-out. In addition, make sure you take into account the occupancy per vehicle. Use the percentages on Intersections one and two to divert the site traffic during operational and target years. In addition, use the same percentages for percent turns and throughs during the present time. 15% 40% 30% 50% 50% 1 12 Site 5% 10%
Example: If you calculated 100 vehicles exiting the site, then 50% is going right and the other 50% is going left. Then take each of the volumes and distribute the volume in both intersections. So if 50% of the 100 vehicles are turning left then: 50 vehicles x 30% is turning right (100 x 15% is turning right) 50 vehicles x 10% is turning left (100 x 10% is turning left) 50 vehicles x 60% is going through (100 x 30% is turning right) Do the same for the vehicles going into the site as well. Then use interpolation to figure out the amount distributed in going through. For the present time, use the percentages, as shown, to calculate the turns. For example, intersection one has a south bound through-right and through-left shared. Therefore: SB left = 150 x 50% = 75 SB right - 200 x 30% -60 SB Through one-150-75-75 SB Through two = 200 - 60 = 140 Total SB Through = 140 + 75 = 215 Problem three explanation: Compare the calculated parking generation to the number of vehicles during peak, going into the office parking.