The first incident involving a Tesla Semi occurred in the Greater Sacramento area in northern California yesterday. The highway in Placer County was closed by the responding California Highway Patrol unit.
Semi Fire
The exact causes and details of the fire and incident remain unclear at this time, but it seems that the Semi caught fire around 3 AM immediately following the crash. The highway was closed in both directions due to the fire and remained closed until late afternoon for the westbound lanes, while eastbound was closed until about 7:30 PM. The incident began as a crash, and no injuries were reported.
Batteries
Electric vehicle fires are rare, in fact, they’re much rarer than traditional vehicle fires, but there are a few key facts to keep in mind. EV fires tend to be devastating for several reasons – the materials in the battery can be toxic when exposed to the air – especially through the smoke and fumes of a fire. In addition, due to the massive amounts of energy that EV batteries can store, EV fires can blaze for a long period of time. We recently dug into EV battery electrolytes and the chemistry in batteries.
This Tesla Semi fire is particularly devasting, partly due to the Semi having a ~900kWh battery – nearly 9-10 times that of a Model Y. In a recent incident report involving a Model Y fire, it took about 10,000 gallons of water and 4 hours to extinguish the fire. This one began burning at 3 AM and it wasn’t until more than 12 hours later that the battery temperature was under control.
First responders on the scene have had to don HAZMAT suits in order to respond to the fire, and the fumes from the fire are the primary reason that the local roadway has been closed. In general, the immediate response for EV fires is to cool the battery pack, generally using water. Other options include submerging the pack in water to immediately cool it, or to bury the pack with sand, or just letting it burn itself out.
For now, first responders appear to be hosing down the Semi with just water, and nothing else is on the books just yet. The Semi is on fire pretty close to a major treeline, but luckily California hasn’t had a spate of dry weather recently, so the risk of this evolving into a major wildfire remains pretty low, according to officials.
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Tesla has introduced a new patent on a unique system for adjusting vehicle suspension based on the environment around it.
This new patent addresses the Model 3’s adaptive suspension and future active suspension for other vehicles. Tesla already adjusts air suspensions based on air density, road elevation, and saved data points, but this patent is expected to be relevant for vehicles with air suspension as well.
Active Adjustable Suspension
This new system includes several steps. It generates a road roughness map that will be shared across the fleet to generate a comprehensive network of road conditions, which is updated every time a fleet vehicle passes over the same road.
This network is built of GPS coordinates along with data gathered from vehicle sensors, including accelerometers and suspension height data. Overall, a height map of road roughness and acceleration data is combined to build a dynamic suspension roadmap.
Essentially, by putting together an Active Adaptive Suspension system, road roughness map, and vehicle sensors, Tesla is building a global map of road conditions to change how vehicles adapt to roads in real-time. This is an innovative technique and something that Tesla’s uniquely connected fleet is capable of.
These features could provide several benefits, such as improved ride comfort and increased vehicle safety, by adjusting the suspension for conditions as they arrive. This also has the opportunity to increase vehicle efficiency, as riding over bumps while higher will slightly increase rolling efficiency as the suspension absorbs the impact rather than losing forward momentum.
Not a Tesla App
Air Suspension Saved Points
The Tesla Model S, Model X, and Cybertruck all save data points based on bumps in the road for regular routes. This means that speed bumps, steep driveways, bumpy dirt roads, or car washes will automatically trigger the suspension raising. After passing these points, the suspension will be lowered automatically.
This new active adjustable suspension will likely be a feature on all of Tesla’s future vehicles, which means a smoother ride will be coming soon to future iterations of the Model Y as well. Take a look at our Model Y Juniper Wishlist for more features we’d love to see.
Many Uber drivers use Teslas – in fact, Uber and Tesla have a joint sales program that helps Uber drivers either get Tesla rentals, or purchase/lease their own Tesla using Uber’s EV Assistance Package.
Uber has now upped their game further by integrating two features directly into Tesla – Automatic Trip Navigation and Battery-Aware Matching.
Automatic Trip Navigation
Automatic Trip Navigation connects the Uber app with Tesla. This means that when an Uber driver accepts a trip, the pick-up destination will be automatically sent to the Tesla. Once you arrive and the passenger(s) enter, their destination is automatically set in your vehicle’s navigation so that you can begin your trip. This makes the process seamless and could even save a few minutes off each trip.
Battery-Aware Matching
Another perk that comes with connecting your Tesla and Uber accounts is Battery-Aware Trip Matching. This means that you’ll only see trips, including travel distance to the pickup area, as well as the trip itself – that are within your currently estimated battery range.
For Uber drivers, this is a fantastic feature that helps filter our trips you’re not able to complete without charging. Uber drivers will have an easier time planning trips, as well as planning for their next charge – whether that’s at home, or at a Supercharger.
Setup
Setup for both Navigation and Battery-Aware Matching is simple. In the eligible vehicles pane in the Uber App, you can hit the connect button next to your Tesla. You’ll then sign into your Tesla account and grant access to Uber. Uber uses the official Tesla API for third parties to determine the range left on your vehicle and to send destinations to your navigation system.
For iOS and Android, you’ll want to grant the necessary permissions by selecting the boxes next to Vehicle Information and Vehicle Commands and hit allow. On Android, you will also have to go to Menu > Account > Navigation and enable Tesla Navigation as the primary navigation.
These two new features make Tesla Uber driving an even more compelling pitch, as many Uber drivers already save quite a bit of money from driving a low-maintenance EV, alongside the reduced cost of electricity compared to gas.
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