WIM #36 MN 36 MP 15.0 LAKE ELMO APRIL 2014 MONTHLY REPORT

WIM #36 MN 36 MP 15.0 LAKE ELMO APRIL 2014 MONTHLY REPORT

In order to understand the vehicle classes and groupings, the MnDOT Vehicle Classification Scheme and the Vehicle Class Groupings for Forecasting are shown on the TDA Data Products page at http://www.dot.state.mn.us/traffic/data/data-products.html#weight. The WIM Monthly Reports are shown at http://www.dot.state.mn.us/traffic/data/reports-monthly-wim.html. For the month of April 2014, the system was operational for 98.5% of the time. On Tuesday, 4/8/14, no data was found from 12:00 am - 7:00 am. Data loss is attributed to a motherboard replacement that took place at that site. Volume was computed using all monthly data. The data in this report uses the data that was collected for the month (no extrapolations performed). VOLUME For WIM #36 on MN 36 at mile post 15.0 in Lake Elmo, there were 1,096,742 vehicles for the month of April. The Average Daily Traffic (ADT) and Heavy Commercial Average Daily Traffic (HCADT) were respectively 36,558 and 1,200 for April 2014. Of the heavy commercial vehicles, the two highest traffic volumes were generated the Class 5 s and 9 s. Figure 1 shows the average number of vehicles broken down by direction (eastbound vs. westbound; EB vs. WB) and as a function of time (weekday). The average number of vehicles traveling EB peaked on Fridays, while the average number of vehicles traveling WB peaked on Wednesdays. Lowest traffic volumes were reported over the weekends for both directions. Figure 2 shows directional traffic volume for passenger vehicles (Classes 1, 2, and 3) and heavy commercial vehicles (Classes 4 to 13), as a function of time (hour of day). Volume peaked between 1:30 pm and 7:00 pm for EB passenger vehicles, while volume going WB peaked twice once between 6:00 am and 9:30 am and again between 1:30 pm and 6:30 pm. Data also showed marginally greater traffic volume traveling WB than EB (51.2% WB, 48.8% EB) for passenger vehicles. For heavy commercial vehicles, volume going EB peaked between 7:00 am and 4:30 pm, while volume going WB also peaked between 7:00 am and 4:30 pm. Heavy commercial vehicles were also reviewed for directional volume differences; there were more heavy commercial vehicles traveling WB than EB (51.2% WB, 48.8% EB). VEHICLE CLASSIFICATION The traffic volume consisted of 1,060,750 passenger vehicles (96.7%) and 35,992 heavy commercial vehicles (3.3%). Table 1 summarizes traffic volumes by vehicle class, as well as providing traffic volume information for overweight vehicles. OVERWEIGHT VEHICLES During normal weight limits, the maximum allowable weight for a single axle is 20,000 pounds; tandem axles, spaced 8 or less, can be up to 34,000 pounds; tridem axles, spaced 9 or less, can be up to 43,000 pounds; quad axles, spaced 13 or less, can be up to 51,000 pounds; and the maximum GVW is 80,000 pounds. The data was analyzed with the normal load limits in effect and that data is presented in the table and graphs. 1 Page

The total volume and total heavy commercial volume for April 2014 was 1,096,742 and 35,992, respectively. A total of 2,951 vehicles were overweight, which translates into 0.3% of total traffic (or 8.2% of heavy commercial vehicles). Figure 1 shows the average number of overweight vehicles traveling directionally (EB vs. WB) as a function of time (weekday). The average number of overweight vehicles traveling EB and WB both peaked on Wednesdays and was lowest over the weekends for both directions. The top two overweight violators by class were the Class 10 s and the Class 9 s. Figure 3 depicts overweight vehicles by class as a function of time (hour of day). Class 10 overweight vehicles peaked in volume between 8:00 am and 4:00 pm, while the volume of overweight Class 9 s peaked between 9:30 am and 4:00 pm. The overweight vehicles were also examined for directional differences. Data shows that 63.6% of all overweight vehicles were traveling WB in April 2014. Figure 4 shows total volume of overweight vehicles as a function of time (hour of day), with volumes also calculated by direction (EB vs. WB). Figure 5 shows the number of vehicles during the last 12 months that crossed the WIM weighing more than 88,000 pounds. Due to substantial system problems over the last 12 months, it is hard to draw any conclusive patterns in overweight violations. However, given historical data for this site, winter months generally have lower violations compared to spring and (especially) summer months. Figure 6 shows the gross vehicle weight distribution for Class 9 s and 10 s traveling both directions (EB and WB). Figure 6 illustrates that there were more empty than full Class 9 s traveling in both the EB and WB directions. In contrast, the data suggests more full than empty Class 10 s heading in both directions. WIMs are currently used as a screening tool for weight enforcement, and it is estimated that the WIM scales can measure gross vehicle weights (GVW) within 5-10% of accuracy of static weight scales. Therefore, due to some measurement difference on the WIMs, vehicles that are over 88,000 pounds during normal load limits are considered overweight on this report 1. For the most efficient use of personnel and equipment, these overweight vehicles should be weighed on static scales and reviewed for permits. During the normal load limits, 51 EB vehicles were over 88,000 pounds (1 vehicle was a Class 9; 27 vehicles were Class 10 s). Of vehicles traveling WB during normal load limits, 43 vehicles were over 88,000 pounds (2 were C9 s; 16 were C10 s). Table 2 summarizes the Top 10 Gross Vehicle Weights for Class 9 and Class 10 vehicles for April 2014. SPEED The speed limit on MN 36 at the WIM site is 65 mph. Combining all four lanes in April 2014, the following was recorded at WIM #36: 1) average speed of 65 mph, 2) median 1 Vehicles are legally considered overweight at 80,000 pounds during normal load limits. However, to account for the 5-10% measurement error on the WIMs, vehicles weighing more than 10% over the legal overweight definition are considered overweight for the purposes of this report (> 88,000 lbs; 80,000 lbs + 8,000 lbs = 88,000 lbs). 2 Page

speed of 67 mph, and 3) an 85 th percentile speed of 72 mph. Table 3 summarizes the vehicle data for the Top 20 speeders that crossed WIM #36 in April. The speed of the Top 20 ranged from 103 mph to 124 mph. It is interesting to note that four in the Top 20 appeared to have been racing. On two separate occasions, a pair of vehicles traveling the same direction crossed the WIM in very close temporal proximity exceeding 100 mph. Figure 7 shows the average speed of passenger vehicles and heavy commercial vehicles as a function of lane (Lanes 1-4), direction (EB vs. WB), and time (hour). The slowest vehicles were the heavy commercial vehicles in the driving lanes, while the fastest vehicles were the passenger vehicles in the passing lanes. The difference between the average slowest vehicles and the average fastest vehicles was 6 mph. Figure 8 shows the average speed of vehicles as a function of the day of month. Depending on the hour of the day, the average hourly speeds varied between 44 mph and 70 mph over the course of the month. Figure 9 shows the average speed as a function of lane (Lanes 1-4) and time (hour). Vehicles in the passing lanes were, on average, 3 mph faster than vehicles in the driving lanes that were traveling in the same direction. BRIDGE The Stillwater Bridge No. 4654 is approximately 6.7 miles east of WIM #36, and Bridge No. 82009 is 2.1 miles west of WIM #36. For the month of April 2014, WIM #36 encountered 1,096,742 vehicles and recorded a total weight of 4,986,244 kips (1 kip = 1,000 pounds). Figure 10 summarizes the total gross vehicle weight (GVW) by lane and class and Figure 11 summarizes the percentages each class contributes to the total GVW. Table 4 provides details on the class breakdowns versus lane for GVW. MATERIALS For April 2014, a total of 17,399 ESALs passed over the pavement at WIM #36 with approximately 81.9% of the ESALS in the driving lane (32.1% EB and 49.8% WB). Figure 12 graphically depicts the total ESALs by class and lane. Figure 13 summarizes the percentages that each vehicle class contributes to the total ESALs. It is interesting to note that the Class 9 s provide 26.3% of the ESALs while they are only 5.8% of the total gross vehicle weight. Table 5 provides details on ESAL values by class and lane. Table 5 also provides the flexible ESAL factors for each vehicle class using a terminal serviceability of 2.5 and a structural number of 5. For April 2014, ESALs were largest in Lane 4 (WB driving lane). Therefore, the WB driving lane is the design lane, and the growth factor for this section of MN 36 in Washington County is 0.7%. For the WB driving lane, there were 81 Class 9 trucks and 595 Class 10 trucks over 80,000 pounds. These 676 vehicles generated 1,039 ESALs. If all of these trucks weighed just 80,000 pounds, they would have generated 959 ESALs 80 ESALs lower. If you take April s WB driving lane ESALs of 8,657 and multiply it by 12 to get an annual ESAL number, apply a growth factor of 0.7% for 20 years (1.14) and then multiply it by 20 to get a 20-year BESAL, you get 2,368,656. If you go through the same calculation but start with a monthly value of 8,577 (WB driving lane ESALs without all of the overweight Class 9 and 10 vehicles), you come up with 2,346,715 20-year 3 Page

BESALs. The difference between the 20-year BESALs, divided by 8,657, is 2.53 months. This translates into the pavement reaching its 20-year design life about 2 months earlier due to the overweight Class 9 s and 10 s. This is a quick, back-of-the-napkin calculation for specifically the Class 9 s and 10 s; calculation does not include the 8 other heavy commercial classes. As part of a technical implementation research project, we are looking at developing a report function that will perform this calculation for all heavy commercial classes. Because the heavy commercial haulers are looking to move that tonnage of freight, we will add additional legal-weight trucks so that the total tonnage being shipped stays the same. FREIGHT For WIM #36, it was calculated that approximately 270,138 tons of freight crossed the sensors. More freight was shipped WB (145,274 tons) than EB (124,863 tons). Table 6 summarizes the number of vehicles by class and the number of empty vehicles. Table 6 and Figure 14 summarize the freight shipment by class, direction, and tonnage. CALIBRATION WIM #36 was most recently calibrated on September 12, 2013. Front axle weights of Class 2 s, 3 s, and 9 s are being monitored on a monthly basis to assure performance between calibrations. Table 7 summarizes the front axle weight of the Class 2 s, 3 s, and 9 s by lane. The current goal of the calibration is to have each individual axle stay within a range of ±9% of baseline calibration. Table 7 shows that the initial front axle weights are within the ±9% of calibration range for all three classes in all four lanes. WIM #36 is scheduled to be recalibrated within the next couple months. Past WIM research indicates that an unloaded Class 9 should weigh 28 to 32 kips. Data from the MnROAD site indicates that this unloaded range may have moved a little higher. The range for loaded Class 9 s is generally in the 70 to 80 kip range but varies more by site and season. Figures 15 to 18 show histograms of the monthly GVW of Class 9 s over the last 12 months for Lanes 1 to 4. Figure 19 depicts unloaded and loaded peaks as a function of lane (Lanes 1-4) and date. There are enough Class 9 s in Lanes 1 and 4 that a histogram can be developed monthly. In contrast, Lanes 2 and 3 do not get enough Class 9 traffic, meaning that an interpretable histogram can only be generated every two months. SUMMARY In April 2014, the average volume of EB and WB traffic both peaked on Fridays. The average number of overweight vehicles traveling EB and WB both peaked on Wednesdays, with lowest volumes observed over the weekends for both directions. Over 63% of overweight vehicles were going WB. Traffic volume for overweight vehicles peaked between 7:30 am and 4:00 pm. Of the Class 9 s, 7.6% were overweight, while 28.2% of Class 10 s were overweight. The speed of the traffic varied slightly based on vehicle class, lane, and hour of the day. The overall GVW was a greater in the WB direction than EB direction (2,623,107 kips vs. 2,363,137 kips). A similar pattern emerged for ESAL and freight data. WB ESALs were greater than EB ESALs (9,663 4 Page

ESALs vs. 7,736 ESALs), and freight tonnage was also greater going WB than EB (145,274 tons vs. 124,863 tons). Data calculations from April 2014 also suggest that overweight Class 9 s and 10 s are shortening the 20-year BESAL design life by about 2 months. Please see Table 8 for a summary of some of the key data over the last 12 months. Attach: Table 1 Vehicle Classification Data Table 2 Top 10 Gross Vehicle Weight, Class 9 s and Class 10 s Table 3 Top 20 Speeders Table 4 Gross Vehicle Weight by Class and Lane Table 5 ESALs by Class and Lane and Flexible ESAL Factors Table 6 Freight Summary Table 7 Front Axle Weight by Class and Lane Table 8 Site Summary Figure 1 Average Volume and Average Overweight Volume vs. Day of the Week Figure 2 Passenger and Heavy Commercial Vehicles vs. Hour of the Day Figure 3 Overweight Vehicles by Class vs. Hour of the Day Figure 4 Overweight Vehicles by Direction vs. Hour of the Day Figure 5 Histogram of Vehicles Over 88,000 Pounds for Last 12 Months Figure 6 Class 9 s and 10 s by Direction vs. Gross Vehicle Weight Figure 7 Average Speed by Lane and Vehicle Type vs. Hour of the Day Figure 8 Average Speed vs. Day of the Month Figure 9 Average Speed by Lane and Direction vs. Hour of the Day Figure 10 Total Gross Vehicle Weight by Class and Lane Figure 11 Total Gross Vehicle Weight by Class Figure 12 Total ESALs by Class and Lane Figure 13 ESALs by Class Figure 14 Freight Tonnage and Percentage by Direction and Class Figure 15 Monthly Class 9 GVW Histogram Lane 1 (EB Driving) Figure 16 Monthly Class 9 GVW Histogram Lane 2 (EB Passing) Figure 17 Monthly Class 9 GVW Histogram Lane 3 (WB Passing) Figure 18 Monthly Class 9 GVW Histogram Lane 4 (WB Driving) Figure 19 Unloaded and Loaded Peaks by Lane vs. Date To request this document in an alternative format, please contact the Affirmative Action Office at 651-366- 4718 or 1-800-657-3774 (Greater Minnesota); 711 or 1-800-627-3529 (Minnesota Relay). You may also send an e-mail to ADArequest.dot@state.mn.us. (Please request at least one week in advance). 5 Page

25,000 20,000 Figure 1 - Average Volume and Average Overweight Volume vs. Day of the Week EB Vehicles WB Vehicles EB Overweight Vehicles WB Overweight Vehicles 120 100 Average Number of Vehicles 15,000 10,000 80 60 40 Average Number of Overweight Vehicles 5,000 20 0 Sunday Monday Tuesday Wednesday Thursday Friday Saturday Day of the Week 0

60,000 50,000 Figure 2 - Passenger and Heavy Commercial Vehicles vs. Hour of the Day EB Passenger Vehicles WB Passenger Vehicles EB Heavy Commercial Vehicles WB Heavy Commercial Vehicles 2,000 1,800 1,600 Number of Vehicles 40,000 30,000 20,000 1,400 1,200 1,000 800 600 10,000 400 200 0 0 0-1 1-2 2-3 3-4 4-5 5-6 6-7 7-8 8-9 9-10 10-11 11-12 12-13 13-14 14-15 15-16 16-17 17-18 18-19 19-20 20-21 21-22 22-23 23-24 Heavy Commercial Vehicles Hour of the Day

140 120 100 Figure 3 - Overweight Vehicles by Class vs. Hour of the Day C4 C5 C6 C7 C8 C9 80 60 40 20 0 0-1 1-2 2-3 3-4 4-5 5-6 6-7 7-8 8-9 9-10 10-11 11-12 12-13 13-14 14-15 15-16 16-17 17-18 18-19 19-20 20-21 21-22 22-23 23-24 Number of Overweight Vehicles C10 C11 C12 C13 Hour of the Day

350 Figure 4 - Overweight Vehicles by Direction vs. Hour of the Day Total Overweight Vehicles EB WB 300 250 200 150 100 50 0 0-1 1-2 2-3 3-4 4-5 5-6 6-7 7-8 8-9 9-10 10-11 11-12 12-13 13-14 14-15 15-16 16-17 17-18 18-19 19-20 20-21 21-22 22-23 23-24 Number of Overweight Vehicles Hour of the Day

Number of Vehicles 1400 1200 1000 800 600 Figure 5- Histogram of Vehicles Over 88,000 Pounds for Last 12 Months Apr-14 Mar-14 Feb-14 Jan-14 Dec-13 Nov-13 Oct-13 Sep-13 Aug-13 Jul-13 Jun-13 May-13 400 200 0 88-90 90-92 92-94 94-96 96-98 98-100 >100 Vehicle Weight (Kips) Vehicle Weights (Kips) Apr-14 Mar-14 Feb-14 Jan-14 Dec-13 Nov-13 Oct-13 Sep-13 Aug-13 Jul-13 Jun-13 May-13 88-90 28 39 0 0 0 5 2 99 609 342 438 510 90-92 13 14 0 0 0 3 1 103 831 368 416 443 92-94 10 7 0 0 1 4 1 109 805 395 321 388 94-96 7 5 0 0 1 5 1 100 651 326 277 360 96-98 3 1 0 0 0 2 0 86 514 300 170 291 98-100 2 1 0 0 1 1 2 47 423 235 112 231 >100 31 23 0 0 1 13 1 140 1283 924 280 698 TOTAL = 94 90****** 0***** 0***** 4**** 33*** 8** 684 5,116 2,890* 2,014 2,921 * System only 45% operational ** System only 14.9% operational *** System only 58.3% operational ****System only 16.1% operational *****System not operational(jan 2014 to Feb 2014) ******System only 67.7% operational

Figure 6 - Class 9's and 10's by Direction vs. Gross Vehicle Weight 500 450 EB Class 9 WB Class 9 EB Class 10 WB Class 10 400 350 300 Vehicles 250 200 150 100 50 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 Weight (Kips)

75 Figure 7 - Average Speed by Lane and Vehicle Type vs. Hour of the Day Lane 1, EB - Passenger Vehicles Lane 1, EB - Heavy Commercial Vehicles Lane 2, EB - Passenger Vehicles Lane 2, EB - Heavy Commercial Vehicles Lane 3, WB - Passenger Vehicles Lane 3, WB - Heavy Commercial Vehicles Lane 4, WB - Passenger Vehicles Lane 4, WB - Heavy Commercial Vehicles 70 Speed (mph) 65 60 55 0:00 2:00 4:00 6:00 8:00 10:00 12:00 14:00 16:00 18:00 20:00 22:00 Hour

75 Figure 8 - Average Speed vs. Day of Month 70 Speed (mph) 65 60 55 3/30 4/6 4/13 4/20 4/27 Date

75 Figure 9 - Average Speed by Lane and Direction vs. Hour of the Day Lane 1 - EB Driving Lane 2 - EB Passing Lane 3 - WB Passing Lane 4 - WB Driving 70 Speed (mph) 65 60 55 0:00 2:00 4:00 6:00 8:00 10:00 12:00 14:00 16:00 18:00 20:00 22:00 Hour

Figure 10 - Total Gross Vehicle Weight by Class and Lane 800,000 700,000 EB Driving Lane EB Passing Lane WB Driving Lane WB Passing Lane 600,000 Total Gross Weight (Kips) 500,000 400,000 300,000 200,000 100,000 0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 Vehicle Class

C8 1.2% C7 1.5% Figure 11 - Total Gross Vehicle Weight by Class C9 5.0% C10 5.8% C11 0.0% C12 0.2% C13 0.1% C1 0.0% C6 2.9% C5 4.8% C4 0.3% C2 51.0% C3 27.2%

Figure 12 - Total ESALs by Class and Lane 3,000 EB Driving Lane EB Passing Lane WB Driving Lane WB Passing Lane 2,500 2,000 ESALs 1,500 1,000 500 0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 Vehicle Class

Figure 13 - ESALs by Class C11 0.0% C12 1.5% C13 0.6% C1 0.0% C2 2.1% C3 2.5% C4 2.0% C10 26.3% C5 15.8% C6 16.1% C9 18.9% C8 4.7% C7 9.3%

C11 0 0% Figure 14 Freight Tonnage and Percentage by Direction and Class Eastbound Freight C12 3,444 3% C13 1,997 2% C4 3,067 2% C11 0 0% C12 184 0% Westbound Freight C13 7,878 5% C4 4,194 3% C5 26,880 22% C5 28,641 20% C10 35,646 29% C10 44,657 31% C6 15,417 12% C6 19,236 13% C9 22,916 18% C8 2,353 2% C7 13,144 10% C9 21,764 15% C8 1,835 1% C7 16,885 12%

Percentage of Total Class 9's 9.0% 8.0% 7.0% 6.0% 5.0% 4.0% 3.0% Figure 15 - Monthly Class 9 GVW Histogram - Lane 1 (EB Driving) Unloaded Peak, 28-32 Kips May-13 Jun-13 Jul-13 Aug-13 Sep-13 Oct-13 Nov-13 Dec-13 Jan-14 Feb-14 Mar-14 Apr-14 2.0% 1.0% 0.0% 20 30 40 50 60 70 80 90 100 GVW (Kips) * Data unavailable from October 2013-March 2014 due to system problems.

Percentage of Total Class 9's 9.0% 8.0% 7.0% 6.0% 5.0% 4.0% 3.0% Figure 16 - Monthly Class 9 GVW Histogram - Lane 2 (EB Passing) Unloaded Peak 28-32 Kips Jun-Jul 12 Aug-Sep 12 Oct-Nov 12 Dec 12-Jan 13 Feb 13-Mar 13 Apr-May 13 Jun-Jul 13 Aug-Sep 13 Oct-Nov 13 Dec 13-Jan 14 Feb-Mar 14 Apr-May 14 2.0% 1.0% 0.0% 20 30 40 50 60 70 80 90 100 GVW (Kips) * Data unavailable from October 2013-March 2014 due to system problems.

Figure 17 - Monthly Class 9 GVW Histogram - Lane 3 (WB Passing) Percentage of Total Class 9's 9.0% 8.0% 7.0% 6.0% 5.0% 4.0% 3.0% Unloaded Peak, 28-32 Kips Jun-Jul 12 Aug-Sep 12 Oct-Nov 12 Dec 12-Jan 13 Feb 13-Mar 13 Apr-May 13 Jun-Jul 13 Aug-Sep 13 Oct-Nov 13 Dec 13-Jan 14 Feb-Mar 14 Apr-May 14 2.0% 1.0% 0.0% 20 30 40 50 60 70 80 90 100 GVW (Kips) * Data unavailable from October 2013-March 2014 due to system problems.

Percentage of Total Class 9's 9.0% 8.0% 7.0% 6.0% 5.0% 4.0% 3.0% Figure 18 - Monthly Class 9 GVW Histogram - Lane 4 (WB Driving) Unloaded Peak, 28-32 Kips May-13 Jun-13 Jul-13 Aug-13 Sep-13 Oct-13 Nov-13 Dec-13 Jan-14 Feb-14 Mar-14 Apr-14 2.0% 1.0% 0.0% 20 30 40 50 60 70 80 90 100 GVW (Kips) * Data unavailable from October 2013-March 2014 due to system problems.

Figure 19 - Unloaded and Loaded Peaks by Lane vs. Date 100 38 95 90 85 33 80 28 75 70 65 60 23 55 50 18 45 40 6/1/13 6/15/13 6/29/13 7/13/13 7/27/13 8/10/13 8/24/13 9/7/13 9/21/13 10/5/13 10/19/13 11/2/13 11/16/13 11/30/13 12/14/13 12/28/13 1/11/14 1/25/14 2/8/14 2/22/14 3/8/14 3/22/14 4/5/14 4/19/14 5/3/14 5/17/14 5/31/14 Unloaded (Kips) Loaded (Kips) Lane 1 - Unloaded Peak Lane 3 - Unloaded Peak Lane 1 - Loaded Peak Lane 3 - Loaded Peak Lane 2 - Unloaded Peak Lane 4 - Unloaded Peak Lane 2 - Loaded Peak Lane 4 - Loaded Peak

TABLE 1 - VEHICLE CLASSIFICATION DATA WIM #36 - LAKE ELMO April 2014 MONTHLY MONTHLY MONTHLY MONTHLY AVERAGE MONTHLY TOTAL TOTAL TOTAL VEHICLE DAILY TOTAL VOLUME OVERWEIGHT OVERWEIGHT CLASS VOLUME VOLUME PERCENTAGE VEHICLES PERCENTAGE C1 20 609 0.1% 0 0.0% C2 26,270 788,089 71.9% 0 0.0% C3 9,068 272,052 24.8% 0 0.0% C4 32 962 0.1% 76 2.6% C5 548 16,432 1.5% 164 5.6% C6 158 4,742 0.4% 340 11.5% C7 42 1,262 0.1% 419 14.2% C8 65 1,948 0.2% 88 3.0% C9 200 6,009 0.5% 459 15.6% C10 133 3,985 0.4% 1,125 38.1% C11 0 1 0.0% 0 0.0% C12 7 210 0.0% 89 3.0% C13 15 443 0.0% 191 6.5% TOTAL = 36,558 1,096,742 100.0% 2,951 100.0% TABLE 2 - TOP 10 GROSS VEHICLE WEIGHT, CLASS 9 AND CLASS 10 WIM #36 - LAKE ELMO April 2014 DAY OF VEHICLE GVW DATE WEEK TIME CLASS DIRECTION LANE (lbs) 4/21/14 Monday 6:21:13 10 Eastbound 1 121,000 4/2/14 Wednesday 14:39:30 10 Eastbound 1 113,000 4/9/14 Wednesday 15:01:56 10 Westbound 4 109,000 4/23/14 Wednesday 7:47:31 10 Eastbound 1 106,000 4/11/14 Friday 6:19:09 10 Eastbound 1 104,000 4/26/14 Saturday 9:15:11 10 Westbound 4 103,000 4/9/14 Wednesday 16:34:26 10 Westbound 4 102,000 4/17/14 Thursday 16:34:45 10 Westbound 4 99,000 4/14/14 Monday 14:08:34 10 Westbound 4 99,000 4/23/14 Wednesday 10:20:11 10 Eastbound 1 97,000

TABLE 3 - TOP 20 SPEEDERS WIM #36 - LAKE ELMO April 2014 DAY OF VEHICLE SPEED DATE WEEK TIME CLASS DIRECTION LANE (mph) 4/5/14 Saturday 9:29:17 2 Eastbound 2 124 4/30/14 Wednesday 3:18:10 2 Eastbound 2 119 4/20/14 Sunday 22:43:46 2 Eastbound 2 117* 4/20/14 Sunday 22:43:44 2 Eastbound 2 116* 4/29/14 Tuesday 22:22:00 2 Westbound 3 111 4/6/14 Sunday 7:57:12 2 Eastbound 2 111 4/14/14 Monday 9:41:26 3 Westbound 3 110** 4/14/14 Monday 9:41:26 3 Westbound 4 110** 4/2/14 Wednesday 21:56:52 2 Eastbound 2 109 4/27/14 Sunday 4:15:34 2 Eastbound 2 108 4/23/14 Wednesday 19:35:57 2 Westbound 3 108 4/20/14 Sunday 14:50:06 2 Westbound 3 108 4/20/14 Sunday 16:13:46 3 Eastbound 2 108 4/26/14 Saturday 18:50:09 2 Westbound 3 106 4/26/14 Saturday 17:58:49 2 Eastbound 1 106 4/19/14 Saturday 11:31:12 3 Eastbound 2 106 4/3/14 Thursday 11:03:20 3 Westbound 3 106 4/27/14 Sunday 4:21:37 2 Westbound 3 105 4/25/14 Friday 22:17:42 2 Westbound 4 104 4/20/14 Sunday 18:12:13 2 Eastbound 2 103 * ** Appear to be racing. TABLE 4 - GROSS VEHICLE WEIGHT BY CLASS AND LANE WIM #36 - LAKE ELMO April 2014 EB EB WB WB DRIVING PASSING PASSING DRIVING VEHICLE LANE LANE LANE LANE TOTAL CLASS (Kips) (Kips) (Kips) (Kips) (Kips) PERCENTAGE C1 193 223 241 178 835 0.0% C2 602,219 610,668 670,272 661,238 2,544,397 51.0% C3 346,388 305,498 328,288 377,567 1,357,741 27.2% C4 3,461 1,126 1,652 7,950 14,190 0.3% C5 81,949 31,695 32,536 90,944 237,124 4.8% C6 44,900 17,632 9,905 72,176 144,612 2.9% C7 6,777 25,654 2,288 37,862 72,581 1.5% C8 22,951 5,353 4,098 29,127 61,530 1.2% C9 93,385 28,893 11,455 115,526 249,258 5.0% C10 88,627 33,176 3,967 163,269 289,040 5.8% C11 0 0 0 0 0 0.0% C12 9,426 552 58 560 10,595 0.2% C13 2,126 263 0 1,951 4,340 0.1% TOTAL = 1,302,402 1,060,734 1,064,760 1,558,347 4,986,244 100.0% GVW/LANE = 26.1% 21.3% 21.4% 31.3% GVW/DIRECTION = 47.4% 52.6% GVW/DIRECTION = 2,363,137 2,623,107

TABLE 5 - ESALs BY CLASS AND LANE AND FLEXIBLE ESAL FACTORS WIM #36 - LAKE ELMO April 2014 EB EB WB WB FLEXIBLE VEHICLE DRIVING PASSING PASSING DRIVING ESAL CLASS LANE LANE LANE LANE TOTAL PERCENTAGE FACTOR C1 0 0 0 0 0 0.0% 0.0004 C2 89 86 94 97 367 2.1% 0.0005 C3 112 94 98 131 436 2.5% 0.0017 C4 80 23 29 213 346 2.0% 0.88 C5 1,033 310 299 1,111 2,754 15.8% 0.17 C6 886 318 215 1,380 2,799 16.1% 0.66 C7 157 488 46 926 1,618 9.3% 1.33 C8 328 62 47 385 822 4.7% 0.38 C9 1,305 273 116 1,601 3,295 18.9% 0.64 C10 1,283 482 61 2,756 4,581 26.3% 1.18 C11 0 0 0 0 0 0.0% -- C12 245 13 0 12 270 1.5% 1.86 C13 62 6 0 43 112 0.6% 2.88 TOTAL = 5,581 2,156 1,005 8,657 17,399 100.0% ESALS/LANE = 32.1% 12.4% 5.8% 49.8% ESALS/DIRECTION = 44.5% 55.5% ESALS/DIRECTION = 7,736 9,663 TABLE 6 - FREIGHT SUMMARY WIM #36 - LAKE ELMO April 2014 EASTBOUND WEIGHT OF TOTAL NUMBER PERCENTAGE TOTAL WEIGHT WEIGHT TOTAL EMPTY NUMBER OF OF OF VEHICLES OF EMPTY WEIGHT OF VEHICLE VEHICLE OF EMPTY EMPTY WITH FREIGHT VEHICLES FREIGHT CLASS (Kips) VEHICLES VEHICLES VEHICLES (Kips) (Kips) (Tons) C4 15.0 414 65 15.7% 11,370 842 3,067 C5 8.0 7,860 1,275 16.2% 106,440 8,921 26,880 C6 19.0 2,117 85 4.0% 69,442 1,427 15,417 C7 11.5 567 0 0.0% 32,808 0 13,144 C8 31.0 910 407 44.7% 20,300 9,361 2,353 C9 33.0 2,987 417 14.0% 130,641 12,572 22,916 C10 33.5 1,851 14 0.8% 132,831 347 35,646 C11 36.5 1 1 100.0% 0 29 0 C12 36.5 189 1 0.5% 13,750 29 3,444 C13 31.5 66 1 1.5% 6,041 26 1,997 TOTAL = 16,962 2,266 13.4% 523,622 -- 124,863 WESTBOUND WEIGHT OF TOTAL NUMBER PERCENTAGE TOTAL WEIGHT WEIGHT TOTAL EMPTY NUMBER OF OF OF VEHICLES OF EMPTY WEIGHT OF VEHICLE VEHICLE OF EMPTY EMPTY WITH FREIGHT VEHICLES FREIGHT CLASS (Kips) VEHICLES VEHICLES VEHICLES (Kips) (Kips) (Tons) C4 15.0 499 74 14.8% 14,762 936 4,194 C5 8.0 8,274 1,247 15.1% 113,498 8,714 28,641 C6 19.0 2,520 74 2.9% 84,946 1,299 19,236 C7 11.5 679 0 0.0% 41,579 0 16,885 C8 31.0 1,041 512 49.2% 20,069 11,659 1,835 C9 33.0 2,879 370 12.9% 126,325 11,149 21,764 C10 33.5 2,129 17 0.8% 160,067 431 44,657 C11 36.5 0 0 0.0% 0 0 0 C12 36.5 15 0 0.0% 916 0 184 C13 31.5 323 0 0.0% 25,930 0 7,878 TOTAL = 18,359 2,294 12.5% 588,092 -- 145,274 GRAND TOTAL = 35,321 4,560 12.9% 1,111,715 -- 270,138

TABLE 7 - FRONT AXLE WEIGHT BY CLASS AND LANE WIM #36 - LAKE ELMO April 2014 VEHICLE LANE 1 FRONT AXLE LANE 2 FRONT AXLE LANE 3 FRONT AXLE LANE 4 FRONT AXLE MONTH CLASS (Kips) ± 9% (Kips) ± 9% (Kips) ± 9% (Kips) ± 9% May 13 C2 2.28 5.07% 2.14 1.90% 2.05 3.02% 2.20 6.80% Jun 13 2.30 5.99% 2.17 3.33% 2.09 5.03% 2.24 8.74% Jul 13 2.34 7.83% 2.19 4.29% 2.11 6.03% 2.27 10.19% Aug 13 2.35 8.29% 2.21 5.24% 2.12 6.53% 2.28 10.68% Sep 13 1.86 -- 1.89 -- 1.98 -- 1.95 -- Oct 13 -- -- -- -- -- -- -- -- Nov 13 -- -- -- -- -- -- -- -- Dec 13 -- -- -- -- -- -- -- -- Jan 14 -- -- -- -- -- -- -- -- Feb 14 -- -- -- -- -- -- -- -- Mar 14 -- -- -- -- -- -- -- -- Apr 14 1.95 4.84% 1.91 1.06% 1.97-0.51% 1.95 0.00% May 13 C3 3.29 6.82% 3.07 3.02% 2.91 3.19% 3.16 7.48% Jun 13 3.33 8.12% 3.12 4.70% 2.99 6.03% 3.23 9.86% Jul 13 3.39 10.06% 3.17 6.38% 3.03 7.45% 3.29 11.90% Aug 13 3.41 10.71% 3.18 6.71% 3.04 7.80% 3.31 12.59% Sep 13 2.68 -- 2.72 -- 2.82 -- 2.83 -- Oct 13 -- -- -- -- -- -- -- -- Nov 13 -- -- -- -- -- -- -- -- Dec 13 -- -- -- -- -- -- -- -- Jan 14 -- -- -- -- -- -- -- -- Feb 14 -- -- -- -- -- -- -- -- Mar 14 -- -- -- -- -- -- -- -- Apr 14 2.77 3.36% 2.75 1.10% 2.79-1.06% 2.80-1.06% May 13 C9 13.19 13.51% 11.65 9.60% 10.35 7.81% 11.68 10.92% Jun 13 13.11 12.82% 11.42 7.43% 10.53 9.69% 11.86 12.63% Jul 13 13.27 14.20% 11.77 10.72% 10.78 12.29% 11.92 13.20% Aug 13 13.38 15.15% 11.79 10.91% 10.72 11.67% 12.09 14.81% Sep 13 10.54 -- 10.1 -- 10.13 -- 10.37 -- Oct 13 -- -- -- -- -- -- -- -- Nov 13 -- -- -- -- -- -- -- -- Dec 13 -- -- -- -- -- -- -- -- Jan 14 -- -- -- -- -- -- -- -- Feb 14 -- -- -- -- -- -- -- -- Mar 14 -- -- -- -- -- -- -- -- Apr 14 10.58 0.38% 9.96-1.39% 9.98-1.48% 10.55 1.74%

TABLE 8 - SITE SUMMARY WIM #36 - STILLWATER April 2014 V O L U M E & V E H I C L E C L A S S HEAVY HEAVY HEAVY HEAVY COMMERCIAL COMMERCIAL PASSENGER PASSENGER COMMERCIAL COMMERCIAL VEHICLES IN VEHICLES IN TOTAL MONTHLY MONTHLY VEHICLES VEHICLES VEHICLES VEHICLES DRIVING LANE PASSING LANE MONTH VOLUME ADT HCADT # % # % % % May 13 1,214,618 39,181 1,297 1,174,420 96.7% 40,198 3.3% 74.3% 25.7% Jun 13 1,105,202 36,840 1,223 1,068,506 96.7% 36,696 3.3% 69.3% 30.7% Jul 13 -- -- -- -- -- -- -- -- -- Aug 13 1,138,183 36,716 1,637 1,087,442 95.5% 50,741 4.5% 73.9% 26.1% Sep 13 1,094,574 36,486 1,160 1,059,772 96.8% 34,802 3.2% 71.8% 28.2% Oct 13 -- -- -- -- -- -- -- -- -- Nov 13 -- -- -- -- -- -- -- -- -- Dec 13 -- -- -- -- -- -- -- -- -- Jan 14 -- -- -- -- -- -- -- -- -- Feb 14 -- -- -- -- -- -- -- -- -- Mar 14 -- -- -- -- -- -- -- -- -- Apr 14 1,096,742 36,558 1,200 1,060,750 96.7% 35,992 3.3% 75.9% 24.1% TOTAL = 5,649,319 -- -- 5,450,890 -- 198,429 -- -- -- AVERAGE = 1,129,864 37,156 1,303 1,090,178 96.5% 39,686 3.5% 73.1% 26.9% E S A L S ESALS ESALS ESALS ESALS DRIVING PASSING PAVEMENT EB EB WB WB LANE LANE LIFE DRIVING PASSING PASSING DRIVING TOTAL ESALS ESALS DECREASE MONTH LANE LANE LANE LANE ESALS % % MONTHS* May 13 17,701 3,934 1,430 11,169 34,234 84.3% 15.7% 73.4 Jun 13 11,902 3,723 2,289 10,227 28,140 78.6% 21.4% 39.2 Jul 13 -- -- -- -- -- -- -- -- Aug 13 23,775 7,670 2,164 21,144 54,754 82.0% 18.0% 62.5 Sep 13 8,939 3,063 1,276 8,828 22,107 80.4% 19.6% 23.3 Oct 13 -- -- -- -- -- -- -- -- Nov 13 -- -- -- -- -- -- -- -- Dec 13 -- -- -- -- -- -- -- -- Jan 14 -- -- -- -- -- -- -- -- Feb 14 -- -- -- -- -- -- -- -- Mar 14 -- -- -- -- -- -- -- -- Apr 14 5,581 2,156 1,005 8,657 17,399 81.8% 18.2% 2.5 TOTAL = 67,898 20,546 8,165 60,025 156,633 -- -- -- AVERAGE = 13,580 4,109 1,633 12,005 31,327 81.4% 18.6% 40.2 * Based on WLI of 88,000 lbs in effect up through end of day on March 13, 2014.

TABLE 8 - SITE SUMMARY (contd.) WIM #36 - STILLWATER April 2014 G R O S S V E H I C L E W E I G H T OVERWEIGHT/ GVW GVW GVW GVW O TOTAL OVERWEIGHT/ HEAVY NUMBER NUMBER EB EB WB WB TOTAL V V NUMBER OF TOTAL COMMERCIAL OVER OVER MONTH DRIVING PASSING PASSING DRIVING GVW E E OVERWEIGHT VOLUME VOLUME 88,000 98,000 LANE LANE LANE LANE KIPS R H MONTH VEHICLES % % LBS LBS May 13 1,859,644 1,382,864 1,285,309 1,753,952 6,281,769 W I May 13 7,500 0.6% 18.7% 2,921 930 Jun 13 1,558,847 1,265,102 1,286,836 1,590,961 5,701,746 Jun 13 6,206 0.6% 16.9% 2,015 394 E C Jul 13 -- -- -- -- -- Jul 13 -- -- -- -- -- I L Aug 13 1,869,591 1,443,151 1,255,087 2,082,758 6,650,587 Aug 13 12,876 1.1% 25.4% 5,116 1,708 G E Sep 13 1,379,201 1,213,599 1,123,979 1,522,851 5,239,631 Sep 13 4,037 0.4% 11.6% 684 188 Oct 13 -- -- -- -- -- H S Oct 13 -- -- -- -- -- Nov 13 -- -- -- -- -- T Nov 13 -- -- -- -- -- Dec 13 -- -- -- -- -- Dec 13 -- -- -- -- -- Jan 14 -- -- -- -- -- Jan 14 -- -- -- -- -- Feb 14 -- -- -- -- -- Feb 14 -- -- -- -- -- Mar 14 -- -- -- -- -- Mar 14 -- -- -- -- -- Apr 14 1,302,402 1,060,734 1,064,760 1,558,347 4,986,244 Apr 14 2,951 0.3% 8.2% 94 33 TOTAL = 7,969,685 6,365,450 6,015,972 8,508,870 28,859,977 TOTAL = 33,570 -- -- 10,830 3,253 AVERAGE = 1,593,937 1,273,090 1,203,194 1,701,774 5,771,995 AVERAGE = 6,714 0.6% 16.9% 2,166 651 * Based on WLI of 88,000 lbs in effect up through end of day on March 13, 2014. S P E E D 85th AVERAGE MEDIAN PERCENTILE SYSTEM SYSTEM EB WB TOTAL EB WB SPEED SPEED SPEED OPERATION OPERATION FREIGHT FREIGHT FREIGHT FREIGHT FREIGHT MONTH (mph) (mph) (mph) Days % F MONTH TONS TONS TONS % % May 13 65 67 72 31 100.0% R May 13 210,355 144,804 355,159 59.2% 40.8% Jun 13 65 67 72 30 100.0% E Jun 13 154,602 146,935 301,537 51.3% 48.7% Jul 13 -- -- -- 13.96 45.0% I Jul 13 -- -- -- -- -- Aug 13 66 67 72 31 100.0% G Aug 13 290,304 256,187 546,491 53.1% 46.9% Sep 13 65 67 72 30 100.0% H Sep 13 127,150 121,558 248,709 51.1% 48.9% Oct 13 -- -- -- 4.79 15.5% T Oct 13 -- -- -- -- -- Nov 13 -- -- -- 17.50 58.3% Nov 13 -- -- -- -- -- Dec 13 -- -- -- 4.83 15.6% Dec 13 -- -- -- -- -- Jan 14 -- -- -- 0.00 0.0% Jan 14 -- -- -- -- -- Feb 14 -- -- -- 0.00 0.0% Feb 14 -- -- -- -- -- Mar 14 -- -- -- 21.00 67.7% Mar 14 -- -- -- -- -- Apr 14 65 67 72 29.54 98.5% Apr 14 124,863 145,274 270,138 46.2% 53.8% TOTAL = -- -- -- 213.62 -- TOTAL = 907,275 814,759 1,722,034 -- -- AVERAGE = 65 67 72 -- 58.5% AVERAGE = 181,455 162,952 344,407 52.7% 47.3%