Getting to Perfect: True Compliance to MUTCD on Variable Speed Limit Signs

Posted by Phil Perut on Sep 25, 2017 8:03:21 AM

 

In the past, we’ve blogged the proper use and application of Variable Speed Limit Signs on U.S. highways as it pertains to use relative to either traffic or weather conditions. Highlighted were typical designs and regulations with options regulatory agencies employ in color and size of the overall sign, both for the static and the LED aspect of the sign. In the majority of applications however, typical 12 or 18” characters employed fall short of MUTCD full compliance.

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Topics: Mobility, Solar Signs

How to Define a Good Variable Speed Limit Sign

Posted by Phil Perut on Apr 3, 2017 1:30:00 PM

 

State DOT highway Intelligent Transportation Systems (ITS) are progressively capitalizing on comprehensive Variable Speed Limit (VSL) designs. As a more advanced and timely safety warning system, changing the speed limit based on weather or traffic conditions in focused locations offers more precise warning to stretches of especially vulnerable roadways. In often non-negotiable winter road conditions, unreliably slippery roadways require more precise, distinctly locational, lower speed limit advisories. Ideal weather conditions of summer, not so much. Variable speed limit systems are continually proven ITS safety devices in such states as New Hampshire, Wyoming, Minnesota, and Utah.  The VSL Subscribers list continues to climb as a cost effective, dynamic messaging system, in particular with rural locations.

VSLs foster opportunity for DOT’s to utilize accurate placement for both regulatory and warning applications. Serving as warning signs with amber colored characters in particularly hazardous locations, the dynamic aspect of posting variable speed limits or for that matter, blanked out signs, creates a positive and engaging interface with the driving public. Applied as a regulatory sign, VSL’s with white characters bring into play stricter standards with law enforcement options.  Excising proper design criteria, these signs can meet MUTCD standards for lettering in sizes 12 to 18 inches.  

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Topics: Mobility, Solar Signs

SES America Awarded Kentucky LCS Project

Posted by Emily Boissonneault on Mar 17, 2017 10:26:21 AM

SES America Inc.(SESA), a Rhode Island-based manufacturer of digital, LED signage for the transportation industry is pleased to announce the successful commissioning of a multi-year statewide contract for Lane Control Signs in the state of Kentucky.

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Topics: In the News, Mobility, Traffic Control, Lane Control Sign

SESA Mobility Products are approved by Massachusetts DOT

Posted by Emily Boissonneault on Mar 6, 2017 10:42:44 AM

SES America Inc.(SESA), a Rhode Island-based manufacturer of digital, LED signage for the transportation industry has been approved by the Massachusetts Department of Transportation for their Blank Out and Lane Control Signs.  These models are now included in the MassDOT Qualified Traffic and Control Equipment List under Section 824: Flashing Beacons, Illuminated Warning Signs, and Lighted Barrier Arrows.

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Topics: In the News, Mobility, Blank Out Signs, Traffic Control, Lane Control Sign

6 Criteria To Decide if a LED Blank Out Sign Works For Your ITS Application

Posted by Emily Boissonneault on Oct 18, 2016 3:30:00 PM

  

Defining the right type of sign for a specific project can be challenging. There are many different reasons and criteria that effect the choice of one product versus another. Designing a Variable Message Sign to solve a road safety challenge requires a thorough process and defined methodology - it is important to ask the right questions.

On one side, choosing the most advanced sign that can display anything, in any color, at any time is the easiest and most unlimited option. However, this often creates other challenges like power issues, monitoring complexity, and exorbitant costs for simple applications.

On the other side, very simple and cheap solutions exists, such as static signs with flashing beacons. Although, this can also have many disadvantages and does not solve most of the problems discussed in one of our previous blogs.

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Topics: Mobility, Blank Out Signs

Blank Out Signs vs. Dynamic Message Signs: How Can You Save Money

Posted by Phil Perut on Oct 5, 2016 2:59:45 PM

Throughout several blogs, we discussed the benefits of Blank Out Signs (BOS) and Lane Control Signs, and compared their technology against Dynamic Message Signs (DMS) and other types of signs. In this blog, we want to discuss the cost benefits of using Blank Out Signs and Lane Control Signs.

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Topics: Mobility, Blank Out Signs

Discover the Environmental Standards Defined by NEMA TS4

Posted by David Connolly on Sep 16, 2016 10:00:00 AM

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.

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Topics: State Government, Municipal Government, Grid-Powered DMS, Federal Government, Mobility, Solar Signs

Discover the 5 Display Properties Defined by NEMA TS4

Posted by David Connolly on Jun 2, 2016 12:39:44 PM

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.

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Topics: State Government, Municipal Government, Grid-Powered DMS, Federal Government, Mobility, Solar Signs

See How Blank Out Signs Can Replace MUTCD Traffic Signs With Flashers

Posted by Phil Perut on Mar 23, 2016 10:04:07 AM

Static MUTCD traffic signs are often used to warn drivers of specific conditions or potential danger on the roadway, and in many applications are equipped with flashing beacons to provide alert capability for passing motorists. However, many of these signs do not efficiently convey information necessary for drivers to fully understand the circumstances and actions to take to avoid danger.

Here below is a series of examples with comments related to the efficiency of the message:

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Topics: Mobility, Blank Out Signs

When To Use Blank Out Signs vs. Dynamic Message Signs?

Posted by Phil Perut on Feb 22, 2016 3:28:33 PM

When designing ITS systems intended to convey critical messaging to drivers, transportation agencies must consider the requirements for each deployment, and make choices regarding more versatile, full matrix dynamic message signs versus more affordable blank out signs with limited messaging. Often blank out signs can provide all the messaging functionality needed at a fraction of the cost of full size DMS, and do not require advanced communication networks or other infrastructure required by signs with full messaging capability.

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Topics: Mobility, Blank Out Signs