Missouri’s Smart Roadside Program Michelle Teel, P.E., PTOE. MoDOT’s mission to provide a world-class transportation experience that delights our customers and promotes a prosperous Missouri.
MoDOT’s mission to provide a world-class transportation experience that delights our customers and promotes a prosperous Missouri.
Using advanced technology as a tool in the roadside “toolbox” to improve efficiency and effectiveness of commercial motor vehicle enforcement operations.
Targets high risk carriers;
Provides an even playing field;
Can be deployed at different sites (fixed, mobile, etc.);
An opportunity to increase compliance verification when enforcement resources continue to be a challenge; and
The increase volume of CMV traffic requires new methods to validate compliance.
Weigh station presence covers the I-55, I-44,
I-70, I-35 and
I-29 and US 60, 50 and 71 corridors
Virtual station on US 67.
PrePass state with 19 sites, including 4 ramp WIMs
Calendar Year 2010
Portable Scales 1,150
Static Scale Weighs1,887,100
Total Vehicles Weighed5,423,128
Percent of Trucks Using Advanced Technology at Weigh Stations
What Started Missouri on its Smart Roadside path?
Barnhart, MO I-55
One Week – Alert Types
Use of Magnetometer Loop Detector (MLD) to “fingerprint” the commercial motor vehicle on
the mainline. The
loop is used for
PrePass WIM with
the addition of a
Using the MLD, you can electronically tag and track CMVs based on the density and distribution of metal producing a waveform or “fingerprint” of the vehicle and its load.
2. Attach weight data captured on the PrePass mainline WIM for carrier vehicles not enrolled in PrePass Program to the vehicle’s fingerprint with an overview pic.
3. Re-identify the CMV using a MLD loop on the ramp along with a LPR, AUR and Image Capture
system to identify
the carrier and
by querying the
4. The fingerprint of the vehicle on the mainline is matched with the fingerprint on the ramp. When a match is found, the weight and all information gathered from the LPR and AUR are put together.
5. The information from the Smart Roadside System (SMS) is passed to the lane control system and static scale software (Mettler-Toledo). If all the information is valid (no alerts) the vehicle is allowed to use the station’s bypass lane. All other vehicles are sent to the static lane. Lane control information is returned to the SMS system.
6. Eliminated the need for a PrePass Compliance Reader because the system will identify a vehicle enrolled in the PrePass system that was not identified on the ramp of the station if the vehicle received a red light and did not enter the station as required.
Bloomsdale weigh station has 5 full time positions staffed by MSHP CVOs/CVIs.
Open 7 days a week approximately 16 hours a day.
One Week – Alert Types
5.9% Alert ratio
ALPR or AUR:
89.5% – 100%
ALPR + AUR: