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Bay Area drivers have dealt with congestion and bottlenecks on some of the busiest highways in the country. I-680, a major north-south freeway, connects the southern San Francisco Bay Area with I-80 and is a key regional corridor. To maximize highway operations, the Contra Costa Transportation…
December 02, 2021
The project consisted of partial demolition and widening of eight bridges. The Route 710 Pavement Rehabilitation and Widening project spans a 3.5-mile stretch of I-710 through the cities of Commerce, Vernon, Bell, and the unincorporated area of East Los Angeles from Slauson Avenue to Route 60. The…
December 02, 2021
A look at a traffic management initiative at the University of California San Diego
Image: Getty Images
Intelligent transportation systems (ITS) are defined as advanced and innovative ways to monitor or control the operations of traffic and various modes of transport. ITS technology models are seen in apps that riders use to monitor train or bus schedules, so they know when to leave the house or…
November 09, 2021
Better traffic signals save time ... and can help save the planet
Image: INRIX
In February 2021, the United States officially rejoined The Paris Agreement, an international treaty on climate change, committing to reducing greenhouse gases (GHGs) by 50% below 2005 levels over the next decade. To meet these targets, the country needs to continue to reduce emissions 5% every…
October 25, 2021
California High-Speed Rail Authority high-speed train
All images: California High-Speed Rail Authority
With over 39.3 million residents, California is the fifth-largest economy in the world and third largest U.S. state by area. Yet California’s transportation infrastructure has not expanded at a rate that matches the increase in population, tourism, and economic growth in the state, with most…
June 18, 2021
For the last three decades, a half-cent sales tax dubbed “TransNet” has funded the completion of hundreds of transportation projects in San Diego County, the second largest county in the state of California. One such project to benefit from the TransNet sales tax initiative is the Mid-Coast Trolley…
May 26, 2021
I2X or Smartphone communication
Image: Sensys Networks
City streets are evidently dangerous for pedestrians, bicyclists, and other vulnerable road users (VRUs).  For example, 30 people are killed and more than 500 others are seriously injured annually in traffic-related accidents in San Francisco alone, a city with less than 1 million people. A…
May 12, 2021
Sacramento SmaRT Ride vehicle
Sacramento SmaRT Ride vehicle. Image: Sacramento Regional Transit District
Microtransit is a form of transportation known as demand-response, in which customer demand determines the routes that are provided. Those routes can change, even as frequently as daily, to serve customer needs. In the era of COVID-19, as a result of reduced transit ridership as well as public…
April 10, 2021
The Campus Parkway Segment 2 project was an extension of Campus Parkway from Childs Avenue to California State Route 140 in Merced County. The purpose of this project was to provide increased connectivity to the regional circulation network in eastern Merced County by connecting S.R. 99 and S.R.…
March 04, 2021
Inyo National Forest is located in the southeastern part of California, near the town of Bishop. Though it is a picturesque landscape of clear waters, jagged mountains, and lush greenery seemingly divorced from the state’s sprawling metropolises, it is, in fact, only a few hours’ drive from the…
February 03, 2021
The Need for Better Traffic Management During Turbulent Times
Image: one.network
Simon Topp There’s no question: road agencies are operating in turbulent times. From the COVID-19 pandemic and the 2020 presidential election to ongoing civil unrest, there have been unprecedented interruptions to the national road network. The adoption of practical, effective traffic management…
December 09, 2020
The Gerald Desmond replacement bridge is the second-tallest cable-stayed bridge in the U.S. and the first such bridge for vehicles in California. The six-lane bridge crosses Long Beach’s Back Channel and features a 1,000-ft-long main span between two 515-ft-high towers. The signature cable-stayed…
November 11, 2020
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