Table 11: Cost of Delay Caused by Work-Zone for Pittsburgh Downtown Network

3. Travel time from Google maps can be used to calculate delay adjustment coefficients for different periods of the day.

7.2.2 User Cost Associated with Work Zones

Analysis of two different scenarios (base case and work zone) examines how presence of the work zones impacts delay and related users' costs. Table 11 represents costs of delay caused by work-zone in Pittsburgh downtown network. One can note that the costs of delay are the highest for passenger cars because that is the most frequent vehicular category in the network. User delay costs for buses are higher than those for trucks because buses have higher occupancy rate. Figure 35 is a graphical representation of the most important information from Table 11 showing that 94% of total user costs is due to increase delay of private cars. The extra delays experience by drivers, because of work-zones, cost around $123,645.

Table 11: Cost of Delay Caused by Work-Zone for Pittsburgh Downtown Network

Time of day fd fv fs Passenger Car Delay (h)

HGV Delay (h)

Bus Delay (h) Total

AM peak 0.91 0.95 1.5 287.6 1.9 2.0 291.5 Mid-day 0.97 0.90 3 581.7 4.1 4.1 589.8 PM peak 1.00 1.00 1 222.8 1.4 1.6 225.8 Evening 0.84 0.85 1.5 239.3 1.8 1.7 242.7 Free Flow hours 0.76 0.65 5 547.2 5.3 3.9 556.4 Total Delay (h) 1,878.5 14.4 13.2 1,906.2 User Delay Cost ($) 67,064.0 377.0 2,998.7 70,439.7 Vehicle Operating Cost ($) 49,217.9 2,297.8 1,689.7 53,205.4 Total User Cost of Delay ($) 116,281.9 2,674.7 4,688.4 123,645.1