The high-speed train now has a new builder onboarded for the project. Photo of the N700 courtesy of © JR Central

The Texas high-speed train that plans to zip between Houston and Dallas still has some obstacles to plow through, but the project now has a builder at least.

Texas Central, the developer of the Texas Bullet Train, has signed a contract with Salini Impregilo, an Italian construction company and one of the largest civil engineering contractors in the world, and its American subsidiary, Lane Construction.

"This agreement brings us one step closer to beginning construction of the civil infrastructure segments of the project," said Texas Central CEO Carlos F. Aguilar, in a release.

The train still can't move forward because it doesn't own all of the land necessary for the route.

But if/when it does get the land, Salini Impregilo will do the following:

  • supply the civil and infrastructure scope, including the design and construction of the viaduct and embankment sections along the entire route
  • install the track system
  • oversee alignment and construction of all buildings and services that will house maintenance and other rail system equipment

Salini-Lane had previously provided front-end engineering and design for the train's civil infrastructure, as well as an analysis of construction costs and schedule estimates.

"Salini-Lane's unmatched track record with rail infrastructure and, very specifically, its world-class high-speed rail expertise across the globe will be central to the completion of America's first end-to-end high-speed rail system," Aguilar says.

Salini's CEO Pietro Salini says in a statement that the company is both thrilled and honored to bring its large-scale railway expertise to the project.

Salini Impregilo is active in more than 50 countries on five continents, with experience building more than 4,000 miles of railway infrastructure around the world. It has built high-speed train projects in Europe and some iconic projects in the world, including the expansion of the Panama Canal.

Although the company has worked in the U.S. since the 1980s, it expanded its presence in 2016 when it merged with The Lane Construction Corporation, a U.S.-based company with almost 130 years of experience in infrastructure work.

The Texas train will be based on Central Japan Railway's Tokaido Shinkansen train system, which is considered the safest mass transportation system in the world.

The system has transported more than 10 billion passengers in 54-plus years, with no fatalities or injuries from operations, and has an impeccable on-time performance record.

It will debut a new train, the Shinkansen N700S, the sixth generation of this train, before the 2020 Olympics.

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This article originally ran on CultureMap.

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2 Houston space tech cos. celebrate major tech milestones

big wins

Two Houston aerospace companies — Intuitive Machines and Venus Aerospace — have reached testing milestones for equipment they’re developing.

Intuitive Machines recently completed the first round of “human in the loop” testing for its Moon RACER (Reusable Autonomous Crewed Exploration Rover) lunar terrain vehicle. The company conducted the test at NASA’s Johnson Space Center.

RACER is one of three lunar terrain vehicles being considered by NASA for the space agency’s Artemis initiative, which will send astronauts to the moon.

NASA says human-in-the-loop testing can reveal design flaws and technical problems, and can lead to cost-efficient improvements. In addition, it can elevate the design process from 2D to 3D modeling.

Intuitive Machines says the testing “proved invaluable.” NASA astronauts served as test subjects who provided feedback about the Moon RACER’s functionality.

The Moon RACER, featuring a rechargeable electric battery and a robotic arm, will be able to accommodate two astronauts and more than 880 pounds of cargo. It’s being designed to pull a trailer loaded with more than 1,760 pounds of cargo.

Another Houston company, Venus Aerospace, recently achieved ignition of its VDR2 rocket engine. The engine, being developed in tandem with Ohio-based Velontra — which aims to produce hypersonic planes — combines the functions of a rotating detonation rocket engine with those of a ramjet.

A rotating detonation rocket engine, which isn’t equipped with moving parts, rapidly burns fuel via a supersonic detonation wave, according to the Air Force Research Laboratory. In turn, the engine delivers high performance in a small volume, the lab says. This savings in volume can offer range, speed, and affordability benefits compared with ramjets, rockets, and gas turbines.

A ramjet is a type of “air breathing” jet engine that does not include a rotary engine, according to the SKYbrary electronic database. Instead, it uses the forward motion of the engine to compress incoming air.

A ramjet can’t function at zero airspeed, so it can’t power an aircraft during all phases of flight, according to SKYbrary. Therefore, it must be paired with another kind of propulsion, such as a rotating detonation rocket engine, to enable acceleration at a speed where the ramjet can produce thrust.

“With this successful test and ignition, Venus Aerospace has demonstrated the exceptional ability to start a [ramjet] at takeoff speed, which is revolutionary,” the company says.

Venus Aerospace plans further testing of its engine in 2025.

Venus Aerospace, recently achieved ignition of its VDR2 rocket engine. Photo courtesy of Venus Aerospace

METRO rolls out electric shuttles for downtown Houston commuters

on a roll

The innovative METRO microtransit program will be expanding to the downtown area, the Metropolitan Transit Authority of Harris County announced on Monday.

“Microtransit is a proven solution to get more people where they need to go safely and efficiently,” Houston Mayor John Whitmire said in a statement. “Connected communities are safer communities, and bringing microtransit to Houston builds on my promise for smart, fiscally-sound infrastructure growth.”

The program started in June 2023 when the city’s nonprofit Evolve Houston partnered with the for-profit Ryde company to offer free shuttle service to residents of Second and Third Ward. The shuttles are all-electric and take riders to bus stops, medical buildings, and grocery stores. Essentially, it works as a traditional ride-share service but focuses on multiple passengers in areas where bus access may involve hazards or other obstacles. Riders access the system through the Ride Circuit app.

So far, the microtransit system has made a positive impact in the wards according to METRO. This has led to the current expansion into the downtown area. The system is not designed to replace the standard bus service, but to help riders navigate to it through areas where bus service is more difficult.

“Integrating microtransit into METRO’s public transit system demonstrates a commitment to finding innovative solutions that meet our customers where they are,” said METRO Board Chair Elizabeth Gonzalez Brock. “This on-demand service provides a flexible, easier way to reach METRO buses and rail lines and will grow ridership by solving the first- and last-mile challenges that have hindered people’s ability to choose METRO.”

The City of Houston approved a renewal of the microtransit program in July, authorizing Evolve Houston to spend $1.3 million on it. Some, like council member Letitia Plummer, have questioned whether microtransit is really the future for METRO as the service cuts lines such as the University Corridor.

However, the microtransit system serves clear and longstanding needs in Houston. Getting to and from bus stops in the city with its long blocks, spread-out communities, and fickle pedestrian ways can be difficult, especially for poor or disabled riders. While the bus and rail work fine for longer distances, shorter ones can be underserved.

Even in places like downtown where stops are plentiful, movement between them can still involve walks of a mile or more, and may not serve for short trips.

“Our microtransit service is a game-changer for connecting people, and we are thrilled to launch it in downtown Houston,” said Evolve executive director Casey Brown. “The all-electric, on-demand service complements METRO’s existing fixed-route systems while offering a new solution for short trips. This launch marks an important milestone for our service, and we look forward to introducing additional zones in the new year — improving access to public transit and local destinations.”

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This article originally ran on CultureMap.