LOUISIANA DOTD TRAFFIC MONITORING/DATA COLLECTION PROGRAM & UPDATES George Chike, P.E. Traffic Data Collection & Management System www.dotd.la.gov
DOTD FIELD CREWS Routine traffic volume counts Vehicle classification counts
ROUTINE TRAFFIC VOLUME COUNTS Also called Short Duration Counts 24-hour Counts for AADT greater than 5000, e.g. I-10 48-hour Counts are acceptable for lower AADT roads Monitor state maintained routes 1700 sites per year are monitored per 3-year cycle Monitor each parish on a 3-year cycle as well
ROUTINE TRAFFIC CLASS COUNTS Also called Short Duration Class Counts 24-hour Counts for AADT greater than 5000, e.g. I-10 48-hour Counts are acceptable for lower AADT roads Monitor state maintained routes 433 sites per year are monitored per 3-year cycle Monitor each parish on a 3-year cycle as well
ROUTINE TRAFFIC CLASS COUNTS Road tube placement
ROUTINE TRAFFIC CLASS COUNTS Vehicle Classifier Secured to a post
FHWA 13 Vehicle Classes ROUTINE TRAFFIC CLASS COUNTS
Six Major Vehicle Types ROUTINE TRAFFIC CLASS COUNTS *8, 9, & 10 may also be called Single Trailer Trucks.
Continuous Count System (CCS) or PATR - About 65 Permanent monitoring sites - Polled daily by telemetry - Malfunctions serviced asap
A Radar Site on I-55 Typical CCS
An Inductive Loop Site on LA-10 Typical CCS
An Inductive Loop Site on LA-1 Typical CCS
An Inductive Loop Site on LA-1 Typical CCS
General display of CCS Continuous Count System (CCS) Cont d
Upgrading PATR sites to Cellular Analog Modem Cellular Modem
Upgrading PATR sites to Cellular RTMS G4 Radar RTMS Sx-300 Radar
CCS (PATR) SITES
CONTRACTED SERVICES Blanket traffic volume and Ramp traffic counts Weigh-in-Motion (WIM) Program - new Traffic Data Management
BLANKET TRAFFIC VOLUME AND RAMP TRAFFIC COUNTS Monitor local roads not maintained by state Also considered as Short Duration (48-hour counts) Approximately 50,000 blanket stations statewide Started monitoring Interstate Exit Ramps in 2016* Each Ramp site monitored per 6-year cycle (48-hour count)* *This is a new program, we have some data but limited and not yet statewide
BLANKET TRAFFIC VOLUME AND RAMP TRAFFIC COUNTS 5,000 sites per year monitored per 10-year cycle Each Parish is monitored per 10-year cycle as well Work is performed by private contractors/consultants
SOME TRAFFIC DATA USES
Traffic Volume: Roads & Highway improvements Analysis of highway capacity & density Determination of highway LOS Determination of highway functional class Forecasting future traffic volumes Design of traffic control systems
VEHICLE CLASSIFICATION Pavement design Forecasts of travel by vehicle type Cost of vehicle operation Speed limit & oversize vehicle policy Safety conflicts due to vehicle mix Highway cost allocation
Truck Weight-in-motion Bridge design & loading Weight distance taxes or use fees Weight & standard enforcement Posting of load limits on bridges for safety Resurfacing forecasts Trends in freight movement Permit policy for overweight vehicle, e.g. fines
Familiar sight? Lack of enforcement will result in this
COMING SOON www.dotd.la.gov
TRAFFIC DATA INTEGRATION WITH ESRI ROADS & HIGHWAYS ESRI Roads and Highways (R&H) A linear referencing system for DOTD to integrate data from multiple linear referencing networks Traffic Server Comprehensive suite of application modules for DOTD to follow FHWA TMG procedures for the daily, monthly and annual traffic statistics reporting
STATIONS AND SEGMENTS Traffic Server uses concept of station records for count locations Station IDs Geometry Routes LRS ID Functional Class Segments etc.
STATIONS AND SEGMENTS CONT D Traffic Server uses the concept of segments to store data relating to a section of road with homogeneous traffic volume LRS section ID Start and end mile points Functional Class Number of lanes Directionality Speed etc.
DATA SYNCHRONIZATION R&H becomes authoritative source for all linear referencing information for Traffic Server stations and segments DOTD will decide which additional fields from R&H need to be synchronized with Traffic Server
TENTATIVE WORK FLOW ESRI Roads & Highways Event Editor We can change stations & segments in info. in R&H Admin. reviews and reconciles changes from everyone Admin updates base tables of R&H using data compression LRS Admin. detects and submits changes to Traffic Server Traffic Server receives and accepts changes Some of the changes will be real time and other changes will be periodic
WHAT TRAFFIC DATA www.dotd.la.gov
DOTD Website Mainframe
DOTD Website
Find a traffic DOTD Website
DOTD Website
DOTD Website
K & D Factors
DOTD ADJUSTMENT FACTORS DATA FROM DOTD TRAFFIC SERVER
SEASONAL FACTORS Monthly Month New RFC System Old RFC System January February March April May June July August September October November December 1R 1 1.088 1.031 1.019 1.022 0.983 0.984 0.986 1.030 0.999 0.961 0.954 0.961 1U 11 1.077 1.032 1.016 1.013 1.000 0.975 0.981 1.015 0.991 0.968 0.970 0.975 2U 12 1.042 1.013 1.003 0.993 0.985 0.991 1.009 1.012 0.985 0.975 0.987 1.006 3R 2 1.037 0.994 0.979 0.993 0.984 1.007 1.022 1.018 0.983 0.971 0.997 1.020 3U 14 1.034 0.989 1.002 0.965 0.971 0..998 1.045 0.996 0.979 0.981 1.014 1.035 4R 6 1.025 0.989 0.986 0.987 0.985 0.995 1.013 1.013 0.993 0.993 1.005 1.018 4U 16 1.014 0.988 0.996 0.986 0.991 1.006 1.022 1.008 1.002 0.976 1.003 1.010 5R 7 1.051 1.011 1.006 0.975 0.976 0.990 1.037 1.012 0.970 0.957 0.998 1.025 5U 17 1.014 1.009 0.993 0.993 0.985 0.992 1.113 1.005 0.921 0.934 1.007 1.010 6R 8 1.025 0.988 1.026 1.145 0.988 0.995 1.133 0.990 0.880 0.900 0.994 0.993
Daily, 24-Hour, 48-Hour SEASONAL FACTORS Daily Factors (2016 Calendar Year) 24 Hour Monitoring Factors 48 Hour Monitoring Factors New RFC System Old RFC System (1) Monday (2) Tuesday (3) Wednesday (4) Thursday (5) Friday (6) Saturday (7) Sunday (a) Monday (b) Tuesday (d) Wednesday {e} Thursday (f) Monday (g) Tuesday (h) Wednesday IR 1 1.012 1.022 0.993 0.966 0.896 1.041 1.094 1.017 1.008 0.980 0.931 1.012 0.994 0.955 1U 11 1.008 1.001 0.979 0.955 0.899 1.040 1.155 1.005 0.99 0.967 0.927 0.997 0.979 0.947 2U 12 1.008 0.995 0.971 0.949 0.872 0.884 1.362 1.002 0.983 0.960 0.911 0.992 0.972 0.935 3R 2 1.008 0.983 0.962 0.942 0.850 1.088 1.259 0.996 0.973 0.952 0.896 0.984 0.962 0.924 3U 14 0.968 0.933 0.902 0.879 0.865 1.200 1.517 0.951 0.918 0.891 0.872 0.934 0.904 0.881 4R 6 0.994 0.958 0.933 0.950 0.902 1.058 1.298 0.976 0.946 0.942 0.926 0.721 0.710 0.696 4U 16 0.972 0.936 0.910 0.910 0.882 1.164 1.403 0.954 0.923 0.910 0.896 0.939 0.917 0.903 5R 7 0.998 0.958 0.949 0.931 0.882 1.100 1.276 0.978 0.954 0.940 0.907 0.966 0.947 0.923 5U 17 0.926 0.921 0.911 0.941 0.862 0.986 1.213 0.924 0.916 0.926 0.902 0.920 0.921 0.914 6R 8 1.032 0.923 0.925 0.921 0.908 1.124 1.268 0.978 0.924 0.923 0.915 0.951 0.924 0.919
AXLE FACTORS Yearly Axle Factors (2016 Calendar Year) Axless RFC System per Vehicle Axle Factor 1 (1R) 2.15194 0.46470 2 (3R) 2.72661 0.36676 6 (4R) 2.25825 0.44282 7 (5R) 2.27168 0.44020 8 (6R) 2.20757 0.45299 9 (7R) 2.15655 0.46370 11 (1U) 2..13832 0.46766 12 (2U) 2.42210 0.41287 14 (3U) 2.09870 0.47649 16 (4U) 2.07138 0.48277 17 (5U) 2.24836 0.44477 19 (7U) 2.02667 0.49342 *New Road Functional System coded in green
2016 K & D Values Functional System 2016 Traffic Design Values by Functional System Monitoring Site Number Highest Hourly Volume Portion of Highest Hourly Volume to AADT AADT 20th Hour 30th Hour 50th Hour Design K20 K30 K50 Design vpd vph vph vph Hour K D 1 21 45993 3725 3633 3541 30th 0.081 0.079 0.077 0.08 0.55 2 39 12647 1227 1189 1164 30th 0.097 0.094 0.092 0.09 0.67 6 43 3833 368 356 341 30th 0.096 0.093 0.089 0.09 0.52 7 40 4989 474 464 454 30th 0.095 0.093 0.091 0.09 0.63 8 17 402 51 48 44 30th 0.127 0.119 0.109 0.12 0.59 11 90 57410 4306 4134 3904 30th 0.075 0.072 0.068 0.07 0.63 14 56 7738 789 774 751 30th 0.102 0.100 0.097 0.10 0.52 16 89 15695 1632 1585 1507 30th 0.104 0.101 0.096 0.10 0.60 K - The ratio of the design hourly volume to the annual average daily traffic (AADT). D - The portion of the traffic in the higher volume direction to the total traffic at the design hourly volume. AADT - Annual average daily traffic. K30 - The proportion of AADT occurring during the 30th highest hour of the design year (8760 hours).
Average Statewide Vehicle Percentages & AADT by Functional Classification For 2016 01 (1R) 02 (3R) 06 (4R) 07 (5R) 08 (6R) 09 (7R) 11 (1U) 12 (2U) 14 (3U) 16 (4U) 17 (5U) 19 (7U) Rural Urban Principal Arterial - Functional Class Principal Principal Principal Principal Minor Major Minor Other Minor Arterial - Arterial - Local Arterial- Arterial- Arterial Collector Collector Freeways/ Arterial Interstate Other Interstate Other Express Collector Local ways Vehicle Type 1 Cycles 0.42% 0.51% 0.31% 0.38% 0.49% 0.44% 0.90% 0.31% 0.28% 0.30% 0.36% 0.49% 2 Cars 47.02% 51.32% 56.14% 55.10% 50.23% 48.18% 44.19% 59.36% 64.66% 62.43% 56.58% 68.82% 3 2A-4T 23.29% 29.37% 30.86% 31.97% 35.25% 38.22% 27.67% 25.59% 27.10% 28.31% 32.02% 24.74% 4 Busses 0.94% 0.74% 0.56% 0.75% 0.83% 0.71% 1.32% 0.66% 0.58% 0.92% 1.34% 1.46% 5 2A-SU 5.48% 5.83% 5.13% 5.81% 8.06% 6.85% 9.13% 4.75% 4.13% 4.77% 5.93% 2.94% 6 3A-SU 0.54% 0.71% 0.60% 0.88% 0.78% 1.11% 0.51% 0.56% 0.46% 0.51% 0.65% 0.88% 7 4A-SU 0.05% 0.09% 0.08% 0.07% 0.03% 0.03% 0.07% 0.06% 0.08% 0.04% 0.23% 0.03% 8 4A-ST 5.69% 2.74% 1.51% 1.64% 1.92% 1.40% 3.01% 1.84% 1.14% 1.44% 1.47% 0.31% 9 5A-ST 14.65% 7.68% 4.11% 3.05% 2.07% 2.63% 12.26% 6.15% 1.29% 0.94% 1.08% 0.32% 10 6A-ST 0.66% 0.64% 0.55% 0.35% 0.31% 0.40% 0.47% 0.45% 0.25% 0.27% 0.29% 0.01% 11 SA-MT 0.75% 0.15% 0.09% 0.00% 0.00% 0.00% 0.22% 0.11% 0.01% 0.00% 0.01% 0.00% 12 6A-MT 0.35% 0.07% 0.03% 0.00% 0.00% 0.00% 0.14% 0.05% 0.00% 0.00% 0.00% 0.00% 13 7A-MT 0.17% 0.16% 0.02% 0.01% 0.02% 0.02% 0.12% 0.11% 0.02% 0.07% 0.04% 0.00% T = 28.34% 18.07% 12.12% 11.81% 13.19% 12.44% 25.93% 14.08% 7.38% 8.04% 9.70% 4.49% AADT 360710 87864 72984 123365 17195 11454 282947 119687 299368 162891 39299 3566 T = truck
Truck Traffic Data on LA Highway System 2001 2016
NO. OF TRK TYPE Truck Traffic Data on LA Highway System 2001 2016 TRUCK TRAFFIC DATA ON LA HIGHWAY SYSTEM 300000 Trk AADT No. of 5A-ST Trk -class 9 (1R&1U) 250000 200000 150000 100000 50000 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 1013 2014 2015 2016 TIME (YR)
NUMBER OF TRUCK GROUP VARIATION IN TRUCK TRAFFIC ON I-12 At CCS Station #21 on a Typical Friday, August 19, 2016 900 2A-SU, 3A-SU, 4A-SU 4A-ST, 5A-ST, 6A-ST 5A-MT, 6A-MT, 7A-MT 800 700 600 616 725 742 786 749 724 620 691 733 740 663 768 582 666 500 480 400 369 345 300 200 100 0 176 207 212 225 214 207 197 209 211 177 190 220 166 190 217 195 164 137 90 104 105 98 79 83 56 62 47 26 23 24 30 4 4 4 5 9 18 29 35 35 37 36 34 30 33 35 35 32 37 28 32 23 16 10 8 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00 TIME OF DAY (HR)
VMT DATA TRUCK VMT DATA ON LA HWY SYSTEM 2010 2015 TRUCK VMT ON LA HWY SYSTEM Truck VMT 5A-ST class 9 (1R&1U) VMT 9000000 8000000 7000000 6000000 5000000 4000000 3000000 2000000 1000000 0 2010 2011 2012 2013 2014 2015 Truck VMT 7274105 4953014 7073002 8006999 3924239 6806791 5A-ST class 9 (1R&1U) VMT 1632309 1245188 2672180 2023369 989693 1173491 TIME (YR)
www.dotd.la.gov
THANK YOU! george.chike@la.gov (225) 242-4557 Office www.dotd.la.gov