- 6001 Elvas Ave, Sacramento
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When you are setting up a work zone in Sacramento, choosing the right traffic control equipment matters. Two of the most common devices crews ask about are changeable message boards and arrow boards. Both play important roles in managing traffic flow and enhancing safety. But they serve different purposes, and using the wrong one can create confusion for drivers and compliance issues for your project.
We have been in the traffic control industry in Northern California for over 50 years. This guide breaks down how each device works, when to use one versus the other, and when your work zone may need both.
A changeable message board, also called a portable changeable message sign (PCMS), is a trailer-mounted or truck-mounted electronic display. It communicates custom text messages to drivers approaching a work zone. The message can change in real time based on changing conditions.
These boards use high-intensity LED lights that remain visible in full Sacramento sun, fog, and nighttime conditions. Messages can be updated on-site through a control panel or remotely via wireless connection. That flexibility makes them one of the most versatile traffic control devices available for road crews and event organizers.
Common messages include:
Message boards are ideal for providing clear detour instructions, alerting drivers to lane closures in advance, and communicating time-sensitive information across high-speed roadways and city streets alike.
We carry two configurations:
Browse our full message board lineup here.
An arrow board is an LED display that shows a directional arrow pattern to guide traffic away from a closed lane or hazard. Unlike a message board, it does not display text. Its job is simple: show drivers which direction to move.
Arrow boards use sequential displays and double arrow patterns to communicate clearly at a glance. High-intensity LEDs make them visible from hundreds of feet away, even on high-speed roads and in low-visibility conditions like fog or night work. They are a critical component of any lane closure setup and are required under California MUTCD guidelines for most situations involving a closed lane on a roadway.
Arrow board display modes typically include:
We carry two configurations:
Browse our full arrow board lineup here.
Here is the simplest way to think about it:
Arrow boards give drivers directional guidance. They answer one question: which way do I go?
Message boards communicate information. They answer a different set of questions: what is happening, how far ahead, what should I expect?
Both devices guide traffic and contribute to road safety. But they do it at different stages of the driver’s approach to a work zone.
A message board typically goes upstream, well before drivers reach the work zone. It gives them time to prepare, slow down, and choose alternate routes if needed. An arrow board goes at the point of the lane closure itself, telling drivers exactly how to move through or around the obstruction.
In many Sacramento work zones, both devices are used together. The message board handles the advance warning. The arrow board handles the directional guidance at the taper.
Use a message board when your work zone requires advance communication with drivers. This includes:
Lane closures with advance notice requirements. On high-speed roadways and Sacramento-area highways, drivers need time to react. A message board placed well upstream gives them that time. It reduces sudden braking and the risk of rear-end accidents.
Detours. When a road is fully closed and traffic must be redirected, a message board communicates detour instructions clearly. Regular traffic signs alone may not be enough for complex detour routes.
Changing conditions. If your project runs into unexpected delays, weather, or schedule changes, a message board lets you update the information in real time. You are not limited to static signage.
Night work. Sacramento roadwork often runs at night to reduce traffic impact. A bright message board provides critical advance warning to drivers who may not expect a work zone at 2 a.m.
Special events. Festivals, road races, and large events throughout Sacramento require traffic communication well beyond what regular traffic signs can provide. Message boards give organizers the flexibility to communicate exactly what drivers need to know.
Use an arrow board when you need to guide drivers through or around a physical lane closure or obstruction. This includes:
Standard lane closures. Any time you are closing one lane on a multi-lane roadway, an arrow board at the taper is standard practice and typically required for compliance. It tells drivers clearly and immediately which open lanes to use.
Shoulder work. Crews working on the shoulder of a highway use arrow boards to warn approaching traffic. Even without a full lane closure, the visual signal from high-intensity LEDs alerts drivers to keep clear.
Moving operations. Truck mounted arrow boards are mounted on shadow trucks that follow moving crews. Striping operations, pothole repair, and similar moving work zones rely on vehicle mounted arrow boards to maintain safety as the crew advances.
High-speed roads. On highways and arterials with higher speed limits, arrow boards are critical. The LED display is visible from a much greater distance than channelizing devices or cones alone. Drivers have more time to react and merge safely.
Night work. Arrow boards are especially important after dark. The high-intensity LED lights cut through darkness and make the work zone visible to drivers from a significant distance.
Yes, and on many projects in Sacramento you should.
A well-designed work zone uses a message board upstream to warn and inform drivers, then an arrow board at the taper to direct them. Each device handles a different part of the communication chain. Together, they create a complete picture that reduces accidents and keeps traffic moving.
For example, on a lane closure on I-5 or Highway 50, you might deploy a message board a mile or more upstream reading “RIGHT LANE CLOSED AHEAD” and then position an arrow board at the actual closure point directing drivers to merge left. The message board prepares them. The arrow board guides them.
If you are not sure what your specific project requires, our team can help. We have decades of experience navigating Sacramento-area traffic control requirements and can advise on proper placement and device selection for your site.
Both message boards and arrow boards come in portable trailer-mounted and truck-mounted versions. Here is how to think about which format fits your project:
Portable trailer-mounted devices are the most common for stationary work zones. They are easy to tow to the job site, deploy quickly, and can be repositioned as the project progresses. Solar panels on most portable models mean you are not dependent on external power. These are a good fit for most construction sites, utility work, and events.
Truck-mounted devices attach to a work truck and move with the crew. They are the right choice for mobile operations like striping, patching, or any situation where the work zone itself is moving. Vehicle mounted arrow boards on shadow trucks are standard practice for these applications.
We stock both message boards and arrow boards for rent and sale. Here is a quick summary of what is available:
All of our equipment is maintained to perform reliably on Sacramento job sites. We serve contractors, utility crews, municipalities, and event organizers throughout Northern California.
If your project needs both devices, we can coordinate delivery and setup so everything is in place when your crew starts. You do not have to source equipment from multiple vendors and manage separate logistics.
Whether you need a message board, an arrow board, or both, we are here to help you get the right equipment for your project. Our team has over 50 years of experience in Sacramento traffic control. We know what local projects require and how to keep your work zone compliant and your crew safe.
Contact us online or call us to discuss your project and get a quote.
Capitol Barricade 6001 Elvas Ave, Sacramento, CA 95819
