» Application requirements
Reliable DMS products built to ITS industry standards Since 1988, Daktronics has been a leader in DMS product development. Vanguard® products are suitable for any ITS application and provide industry-leading reliability, readability and serviceability.
Daktronics designed the front access DMS for simple maintenance, durability and impressive versatility. |
This popular walk-in face mask design displays superior legibility and safer maintenance. |
This full-featured rear access DMS features a faceplate and sliding rear door for easy access to internal components. |
Cost-effective solution to extend the life of your display and also an opportunity to upgrade your display. |
» Proposed Solutions
• Light Emitting Diodes (LEDs) |
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• Pixels |
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• Modules
DMS modules are easy to install and remove thanks to convenient DMS features such as walk-in cabinets, front and rear access doors, and front access doors. Daktronics designs its DMS modules with reliability and durability in mind. |
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Resolution
Resolution means the number of pixels in the physical area of the DMS. The greater the number of pixels per square foot, the greater the amount of detail displayed. - Factoring in viewing distance, DMS used in road applications typically do not require resolution below 20 mm. The three examples below show MUTCD-approved graphics as if they were displayed on a five-foot tall DMS.
- Graphic
Graphics significantly improve the readability of DMS messages. A recent study by the University of Rhode Island found that drivers responded on average 35% faster when text messages included the standard MUTCD graphic symbol. The human brain decodes symbols or symbols much faster than text. Other benefits of graphics:
- 94% of study subjects preferred graphical DMS over text-only DMS.
- Improved recognition among non-native English speakers.
- Drastically reduce the time it takes older drivers to understand messages.
- Character height
ITS displays use a standard 18-inch character height, although deviations may occur depending on the resolution of the display. Some Daktronics DMS are available in character sizes such as 12 inches, 9 inches or 6 inches. Any character, however, can be doubled (or more) in size.
For example, 9-inch characters can be doubled in height to create 18-inch characters; that character will contain more pixels and therefore be clearer than a standard 18-inch character.
• Viewing angle
DMS signals have different viewing angles to provide the best balance between form and function; These angles can meet the needs of many drivers in diverse driving situations. The graphic shows all three perspectives as they can be applied to a highway system. This graphic is not to scale, but it can be used to estimate the viewing angle your highway or road needs. |
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• Viewing distance
The maximum distance a traveler can identify a message on the DMS is called the readability distance. There is no indication in the MUTCD as to the brightness of the LEDs on the DMS, but Daktronics strongly recommends a minimum screen brightness of 9,200 cd/m2. All DMSs should have intensity adjustment to optimize legibility at all ambient light levels. |
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• The media
Daktronics Vanguard® DMS uses several communication methods to control the content and internal systems of the DMS network, including Vanguard® Central Control Software . . |