LTL-M mobile retroreflectometer
Introduction
- Danish company Delta has unveiled its new LTL-M mobile
retroreflectometer, which it says has taken about four years to
develop.
- The unit, seen at the recent Traffex show in Birmingham, UK,
measures all types of road markings at a simulated distance of 30m
"with the highest level of accuracy." The company says that the
LTL-M is to be used mounted on a vehicle measuring retroreflection
at normal traffic speed providing full overview of the condition of
the road markings.
- DELTA says the instrument operates with an accuracy of typically
+/-5%, which is in line with DELTA's hand-held retroreflectometers
LTL-2000, LTL-X and LTL-XL.
- It uses the latest camera and illumination technology, which
results in high accuracy independent of changes in the geometry of
the system through an automatic image process compensating for
vehicle movements.
- Consisting of three units (the sensor mounted on the outside of
the vehicle with camera, flashlight and GPS; processor inside the
vehicle; and the graphical user interface/GUI Tablet PC placed next
to the driver), the LTL-M was the subject of a study carried out by
VTI, the Swedish National Road and Transport Research Institute. The
results are reported in Evaluation of the LTL-M, Mobile measurement
of road marking, compiled by Sven- Olof Lundkvist in 2010.
LTL3000 retroreflectometer
Introduction
- Measures RL on profiled markings up to 15 mm / 0.6 inch
- Memory 8 GB
- Multi-lingual
- Easy-readable color touch LED display with 3 buttons
- Long-life illumination system
- USB memory stick interface
- Power supply, standard Bosch professional battery
- Stray light compensated
- Single handed operation, user-friendly
- Shows and stores day and time
- Facility for entering and storing road ID and user ID
- Data presentation in MS Excel format
LTL3500 retroreflectometer
Introduction
- Simultaneous RL and Qd for dry & wet markings
- RL for continuous wetting
- Measurement time less than 1 sec for both RL and Qd
- Measures RL on profiled markings up to 15 mm / 0.6 inch
- Ambient temperature and humidity
- Memory capacity 8GB
- Multi-lingual
- Average calculation
- Easy-readable color touch LED display with 3 buttons
- Long-life illumination system
- USB memory stick
- Wi-Fi prepared
- Power supply, standard Bosch professional battery
- Shows and stores date, time, air temperature, and humidity
- Facility for entering and storing road ID, user
ID and other measurement related data
- Data presentation in Excel
- Stray light compensated
- Single handed operation, user-friendly
- ”Time for Service” indicator
- Calibration reminder
- Wet timer
- Pass-fail Indicator
Marking Thickness Gauge
Introduction
- The quality and performance of pavement markings have increased
in recent years thanks to better paint and thermoplastic materials
and higher performing glass beads. In addition new, marking types
have improved in particular the performance during wet conditions
at nighttime by allowing better run-off of water. In parallel, cost
of materials has increased having made road owners interested
in knowing the actual amount of paint or thermoplastic applied.
Measurement of the thickness of the markings is used for verification
- DELTA's Marking Thickness Gauge is a digital devise for measuring
the thickness of pavement markings dry, after application. The
Marking Thickness Gauge is very easy to operate and comes in a
sturdy construction and ergonomic design. The Marking Thickness
Gauge can measure markings within the measurement range of
-12.7 mm to +12.7 mm / -0.5 inch to +0.5 inch. The digital display
provides reliable measurement results in seconds.
GRX retroreflectometer
RetroSign GRX offers a range of basic features:
- Measurement of 1, 3 or 7 observation angles
- Calibration reference with values as number or QR code for
scanning
- Automatic colour recognition
- Colour contrast calculation (background and legend)
- Manual pass/fail evaluation
- Memory of >2 mio measurements, >2,000 measurements with
pictures
- Bosch professional replaceable and rechargeable battery
available from the market
- Data transfer to PC via USB memory stick
- Data presentation in generally available software like Excel and
Google Earth
