Variable Message Signs like most ITS equipment needs to be maintained to guarantee reliable operation. There are two types of maintenance visits:
- Preventative maintenance
- Corrective maintenance
We recently published a blog about the 5 Display Properties Defined by NEMA TS4 and are continuing with our series referencing these specifications for Dynamic Message Signs (DMS). This installment will examine the Environmental Requirements described in Section 2 of NEMA TS4 that establishes the limits of operational conditions in which the DMS must perform. They are also intended to make sure the DMS is delivered in good condition.
In the last 40 years, since dynamic messaging signs became an integral part of the U.S. highway’s persona, the industry has gone from flipping mechanically iridescent orange dots to advancing fiber optic designs, and now, LED lighting. With continued advancements in solar due to greater energy efficient design and product with ventilation or cooling systems are no longer necessary. Trending along with LED advancements is the critical need for agencies to maximize their purchasing power while still acquiring ITS devices that truly match their most recent concerns in the field and on paper. As a result agencies are looking towards value versus finding the lowest VMS pricing in contract assessments.
Topics: Grid-Powered DMS
When considering a DMS Manufacturer, there are a variety of factors to take into account. You might be inclined to choose a manufacturer strictly based on cost, but have you truly done your due-diligence? Entering into or accepting a bid with an under performing DMS manufacturer can have serious consequences - consequences that outweigh upfront savings.
Take a look below for the eight criteria we believe defines an outstanding DMS manufacturer:
The NEMA TS4 Hardware Standards for Dynamic Message Signs (DMS) with NTCIP Requirements is a product of the NEMA 3-TS, Transportation Management Systems and Associated Control Devices Section. It is intended to provide the user a safe, dependable, functional and easily maintained Dynamic Message Sign. To this end, the standard provides the minimum hardware and functional characteristics of electronically controlled DMS used for displaying messages to travelers.
What is a Web Server?
A Web Server is a technology that utilizes an HTTP request to manipulate many processes via the World Wide Web or computer networks. It is used in many industries and markets, but it is not yet widely used in our Intelligent Transportation System world.