Delta Retroreflectometer Road Asset Manager and Traffic Accident Terminator
Release time: 2017-07-05
I believe everyone knows that at night the driver's ability to observe things is significantly worse than during the day, and the line of sight will become shorter, resulting in an increased risk of driving at night. Road signs and markings are especially important at this time.
WHY measures retroreflection?
Let's first take a look at the road changes during the day and night.
During the day, the driver observes the road surface, and according to the shape and color of the road surface, it is easy to see the road markings and road signs.
At night, drivers mainly rely on observing the retroreflective light from the road markings to identify the road.
According to relevant data, serious traffic accidents at night are more than twice as many as during the day. With age, older drivers need better road brightness when driving at night, and good road markings help improve the driver's driving operations. As shown in the figure below, the driver's requirements for light increase exponentially with age.
The relationship between visual acuity and age
It can be seen that the safety of traffic flow is highly dependent on the quality of road markings. When driving at night, the retroreflection of road signs and markings is the main way to ensure that vehicles are driving safely on the road. It can help avoid or minimize the number of traffic accidents.
Delta changes road vision and reduces traffic accidents
The Danish company Delta is known for its reliable retroreflectivity measuring instrument for measuring road markings and traffic signs worldwide. Ensuring that traffic markings and signs meet today's standards can help guide traffic safety during the day and night, and can help reduce the number of road accidents and casualties. In addition, understanding the status of road resources allows road owners to make effective financial decisions for road maintenance.
Forty years ago, Delta introduced the first retroreflectivity measuring instrument. For many years, Delta has been involved in writing international standards for the measurement of retroreflective coefficients for road markings and traffic signs. Delta is the preferred choice of leading global suppliers and experts of retroreflectance measuring instruments.
Comprehensive product coverage to get the data you need
Delta's retroreflectometers mainly include three types of products for roads: Retrosign GR3 & GR1 & GRX, LTL-XL, LTL-X Mark 2 and LTL-M. According to different measurement needs, users can choose different models.
Retrosign GR3 & GR1 & GRX, handheld retroreflective measuring instrument, is used to measure road signs of all types of retroreflective materials. GR3, GR1 and GRX represent different models and correspond to different standards. Among them, GRX is the latest model released by Delta, which has unprecedented functions of many similar machines.
LTL-XL and LTL-X Mark 2 are used to measure road markings. After placed on the road markings for 1-3 seconds, the night visibility (RL) and day visibility (Qd) parameters are displayed and saved. The two models are similar in design, software, and functions, but there are differences in some functions for different measurement needs.
LTL-XL can test night visibility (RL) and day visibility (Qd) of road markings in dry and humid environments. Can measure smooth graticules and cross-section graticules up to 5mm.
The LTL-X Mark II is used to measure night visibility (RL). It can measure smooth graticules and cross-section graticules up to 15mm. In addition, measurements can be taken in continuous rain.