Safer Signals
The Nevada Department of Transportation is evaluating and updating the use and placement of ASWS, or Advance Signal Warning Systems, across the state.
About the Project
ASWS include the yellow signs stationed over the roadway that often feature flashing yellow lights to warn of a traffic signal ahead. ASWS are used to alert drivers of upcoming traffic conditions, especially the potential need to stop at a signalized intersection.
The goal is to develop a unified approach statewide that promotes uniformity and consistency in the treatment of ASWS specific to each intersection’s individual needs. This will enhance the safety of the traveling public and promote safer driver behavior. Similar modifications in other states have shown a reduction in travel speeds which enhances safety.
Life-Saving Benefits
One of the behaviors this effort aims to reduce is red-light running, which is present in a large percentage of fatalities and serious injury crashes each year. Estimates show vehicles running red lights result in nearly 200,000 people being injured and more than 900 deaths nationwide per year. Between 2014 and 2018 the average number of traffic-related deaths on Nevada’s roads was 316 per year (Office of Traffic Safety Annual Performance Report FFY 2019).
Advance Signal Warning Systems
Advance warning signs are often placed where roadway curves or other factors limit visibility or expectation of a signal. They are also placed on highways connecting rural and urban areas, such as Pyramid Highway, Mt. Rose Highway and State Route 160.
There are three types of systems and each has unique benefits depending on the characteristics of the intersection.
Static System
Learn MoreStatic System
Only includes signage alerting drivers to an upcoming traffic signal or intersection.
Best used if signal is visible from an adequate distance but there is still a need to provide some advance warning.
Passive System
Learn MorePassive System
Includes signage and a continuously flashing beacon.
Best used if signal is visible from an adequate distance but drivers are transitioning from a rural to an urban area or if signal is isolated, unexpected, and/or road speeds are above 45mph.
Active System
Learn MoreActive System
Includes signage and a flashing beacon that is connected to the signal controller, and only flashes during a signal change, such as from green to yellow, or when a signal is red.
Best used if signal has limited sight distance that doesn’t provide proper reaction time, if the area has heavy truck traffic, or if there are winter or other conditions that require additional stopping distance or reaction time.
What Does this Mean for Me?
NDOT conducted an engineering study in 2019 to establish guidelines for the most effective use of different types of ASWS, compliant with federal guidelines. Following thorough engineering review, some of the advance signals throughout the state are changing from flashing at the onset of an upcoming yellow signal to either a static sign or a continuously flashing signal. Timing of flashing signals may also be modified to enhance safety. Some advance signals may be removed due to the updated guidance.
Most ASWS systems throughout the state are currently active systems. New guidance will allow for the use of all three systems based on field conditions and an engineering study. This will enhance uniformity and improve operations and safety.
Project Details
Project Maps
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Construction Updates
Project Timeline
ASWS Guideance Study & Engineering
Completed 2019
Construction Begins
Fall/Winter 2020
Construction Completion
Fall/Winter 2022
Continued Engineering
Review of ASWS
Continuing
What impacts can I expect during construction?
Motorists should always heed warnings and pay attention to the road ahead.
During construction, access to businesses and residences will remain open at all times. Where needed, flaggers will be stationed at designated areas to maintain safe travel.
Construction activities could include:
Lane Closures
Traffic Delays
Detours
Noise, Dust and Vibration
Please sign up below to receive further updates regarding construction.
Resources
Frequently Asked Questions
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Connect
Communicating with the local and traveling public is a priority for NDOT. Timely construction information and updates will be posted to this website. Construction alerts and project updates will also be distributed electronically. Please subscribe by filling out the inquiry form below if you wish to receive project updates via email. You can also send questions to the project team through the form.
Phone:
(755) 888-7000
Email:
info@dot.nv.govLearn More
Attend an upcoming Town Advisory Board (TAB) or Citizens Advisory Board (CAB) meeting to learn more.
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Warm Springs/Rural CAB Meeting | Wednesday, Jan. 12, 2022 at 6 p.m.
- Washoe County Regional Shooting Facility (classroom), 21555 Pyramid Way, Reno, NV 89512
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Spanish Springs CAB Meeting | Wednesday, Feb. 2, 2022 at 6 p.m.
- Spanish Springs Library, 7100A Pyramid Highway, Sparks, NV 89436
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South Truckee Meadows CAB Meeting | Thursday, Feb. 3, 2022 at 6 p.m.
- South Valleys Library, 15650A Wedge Parkway, Reno, NV 89511
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Sparks CAC Meeting I Thursday, Feb. 10, 2022 at 5:30 p.m.
- Sparks Legislative Building, 745 Fourth Street, Sparks, NV 89431
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City of Reno Ward 2 NAB Meeting| Tuesday, Feb. 15, 2022 at 5:30 p.m.
- Moana Nursery Design Center, 1190 W. Moana Lane, Reno, NV 89509
*All information is subject to change.