lithium ion battery pack Amid three US crashes, revolutionary Tesla remains a work in progress

We're all testers of Tesla.
Several of Tesla's vaunted auto-navigation features are marked in the "beta" phase on its car's touch screen and owner's manual, including self-driving navigation, and "traffic-aware cruise control ".
In other words, Tesla-the focus of three fatal crashes in South Florida-is still in progress.
Fast and high despite the expensive price
Tech cars are a popular product that is growing rapidly in their hometown of California and elsewhere.
Sales in Florida tripled, and sales in the US nearly tripled between 2017 and 2018 as the company introduced more affordable models and increased production.
Critics raved about the power and ease of use of the car, and forgiven the growing annoyance of getting a brand low reliability score in Consumer Reports.
However, Teslas has also been making five
National Highway Traffic Safety Administration and 5-
Star loyalty scores from Consumer Reports.
In a review of Tesla's latest product, autoblog Model 3, in April 2018.
Com writer John Beltz Snyder wrote that the car "proves that electric cars-even electric cars that are relatively affordable-are far more than just electrical appliances.
It's a car that stirs emotions while driving, and in fact, it's a great thing to do well, not only for customers, but also for the whole image of a clean car.
"This is because of this enthusiasm and the position of the car as a pioneer of all-round cars.
Network electricity
The future of drive automated transportation, glitches and spectacular failures have been reviewed so much.
Unlike any other car formed in 2003, Tesla began to create companies and cars that are different from any other car. Instead of gas-
Power engine or gas-and-
Electric hybrid, Tesla's car will be powered by pure power, which requires a simpler mechanical structure that runs at a much lower cost than every mile.
Tesla is more of a software company than a car manufacturer, charging upgrade prices for these advanced features that can be activated with updates downloaded from the Internet, including autonomous driving and, in the basic Model S, the battery capacity is expanded to make the drive range between charges longer.
Autopilot las semi-automatic driver and its connection function
Autonomous-this means that its sensors and cameras can read road markings and vehicles around it and perform functions such as lane change, braking and tracking of road lines and curves.
But drivers still need to be vigilant to take over tasks that the system cannot handle, experts say, although Tesla promises to launch the "fully self-driving" feature later this year
Driverless Tesla (or any car that doesn't require passengers to focus on the road) has a few years to go.
The first car was launched in 2008-high-priced, low-
Roll sports car-enter subsidiary-
In 2012, the market size of the Model S sedan was $100,000 (RM407, 000 ).
The X-Model SUV was launched in 2015, followed by a more compact and affordable Model 3 in 2017.
While Tesla is becoming more attractive in Florida, its market share is still negligible.
The new Tesla registered 46,001 people nationwide, in 2017 and 163,771 in 2018. sales in Florida have been at a lower rate-2,866 from 2017 to 8,797 years later, according to research firm IHS Markit.
This is less than one of every hundred.
According to the company's data, 3 million new cars were registered in Florida in 2018.
One thing Tesla owners like is that cars are sports --
The car is fast and can range from zero to 60 miles per hour in about five seconds.
This could cause trouble. -Three-
In 2017, 9,000 Tesla owners in the Netherlands were fined for speeding, compared with 28% for gasoline.
Electric vehicle website Electrive power drivers. com reported.
The accident in South Florida occurred in South Florida, and authorities and Tesla may still be investigating the three fatal accidents, two involving burning batteries and one involving speeding.
It is still unclear whether the autopilot has played a role in it.
Fort Lauderdale, May 2018: two high school students were killed and another injured after 2014 Model S got out of control at more than 100mph.
It hit a concrete wall twice and then hit a lamp post.
Witnesses said the car caught fire after the second collision.
Investigators found that a small portion of the lithium-ion battery was separated from the car, which was ignited twice after the collision.
The owner of the car modified it, so it could not travel more than 85 miles/hour, however, according to the lawsuit filed on January, an employee of a Tesla dealer, without the consent of the owner, remove the equipment that limits the speed of the car.
The question remains: why does the battery break and explode?
Davie, February 2019: On the afternoon of February 24, a 2016 Model S left the road for "unknown reasons", turned across three lanes, hit a median and palm tree, and caught fire, A report from the police said.
The driver was trapped inside and died.
Witnesses said the driver was speeding, but a police report said the car was traveling 50 miles an hour.
Whether the driver has used the advanced driving system or the "autopilot" of the car for several months may not be known.
As in the aftermath of the Fort Lauderdale crash, although the company insisted that its battery pack was 10 times less likely to catch fire than a petrol vehicle, the car's battery was reignited several times.
On March 2019, west of Delray Beach: on March 1, a 2018 Model 3 drove south on State Road 7 in West Delray, sliding down on a tractor trailer that traveled north
It is not known whether Tesla's Autopilot system or automatic emergency braking system was activated at the time, but the collision triggered a fatal collision between Tesla's Model S and the tractor --
On May 2016, a trailer was located in Williston, Florida, near Gainesville.
The crash in Fort Lauderdale and West Delray triggered an investigation by the National Transportation Safety Commission, which investigated 2016 Williston crashes.
NHTSA is also investigating the West Delray accident, and NHTSA has the right to develop safety regulations, education plans and recall issues. Why NTSB?
While known for detecting collisions involving aircraft, pipelines, ships and trains, NTSB also has the right to investigate road collisions and issue non-
Make binding proposals based on the findings.
According to the agency's website, the agency "investigates selected highway accidents that can improve understanding of broad or new safety issues ".
The NTSB investigation into the recent Tesla accident involved two areas of interest-the automatic vehicle control system of the car and the battery fire.
Two of the accidents reportedly involved California cars driving under automatic driving.
One of them happened on March 2018, when an X-model SUV drove off the road and crashed into a highway guardrail, killing the driver.
The other is the rear Model S.
A fire truck in Culver City was stopped in January 2018.
In addition to the battery fire investigation after the 2018 Fort Lauderdale accident, the California accident also caused a battery fire.
On June 2018, a driver of a 2014 Tesla Model S in West Hollywood escaped safely before the battery pack caught fire and swallowed up the vehicle.
Another fire occurred in August 2017 when the driver lost control of the car and crashed into the garage of an elderly couple's home.
NTSB spokesman Christopher O' neil said the focus of the survey was on issues related to electric vehicles, not Tesla or any particular manufacturer.
O'Neal said a survey report on the challenge posed to first responders by electric vehicle battery fires could be released earlier in the fall.
"I think there will be security advice in the report," he said . ".
Another report on driver performance
By the end of this year, he said, assisting in technology and learning from the accidents in Mountain View city and Culver City.
The lessons, he said, will stem from Tesla's crash in Mountain View and Culver.
He said it was not known whether the findings of the West Delray crash would be included.
Lessons learned from NTSB's final report on the 2016 Williamston crash focus on the limitations of the autopilot system and the responsibility of the driver to remain vigilant and limit the use of the system to limited
While the autopilot can identify and brake slow, stop and slow vehicles that travel in front of Tesla in the same lane, it is not intended to react to vehicles such as tractors
The trailer, crossing or turning left through Tesla's Road, the report said.
Therefore, although the collision was not caused by the failure of the autopilot, Tesla failed to implement safeguard measures to prevent the driver of the car from driving and driving excessively.
Relying on autonomous driving, said NTSB.
Tesla's owner manual NTSB report states that it is recommended that drivers use the autopilot for a limited period of time
Passages, usually separated roads, such as Interstates, do not have intersections or intersections, and there are entrance ramps to ensure that all vehicles are traveling in the same direction.
But the availability of the autopilot is not limited to this kind of road, so there is nothing stopping the driver from using the system on Highway 27 in the United States in the Williams crash, which is not
After the accident, Tesla modified the autopilot to remind drivers more frequently to keep their hands on the steering wheel.
After three warnings, the car must be restarted to restart the autopilot.
This is not enough for the NTSB, which recommends having a semi-open car manufacturer
Autonomous drive systems limit the use of these systems to "conditions for designing them ".
Christopher A, board member of NTSB, wrote: "Joe and Suzy Public . ".
Hart in the William Ston report, "it can be concluded from the name 'autopilot, 'that they don't need to focus on driving tasks because autonomous driving is doing everything.
"Tesla has not announced any action to comply with the NTSB proposal.
Wireless "black box "?
The company also declined to answer any questions from South Florida Sun sentries about any collisions involving its vehicles, including whether any Tesla collisions were found to be caused by a malfunction in autonomous driving or operating software.
In these questions, is the action log of the driver and the car going all the way to the company's server, giving it instant access to the critical pre-
Even if a car's computer is burned down by a fire, there will be a crash.
After the Fort Lauderdale crash in May 2018, police recovered the vehicle's "restraint control module", which controlled the deployment of the airbag and recorded the driver's speed and behavior before the crash.
However, after the Davie crash, the police found that the data storage unit of the car could not be read because of the fire, this means that the only way for the authorities to determine whether the driver is speeding or using an autopilot when his car leaves the road is to transfer the data to Tesla's server before the accident occurs.
Tesla: The safest car did not answer the question about the safety measures it took during the test. Tesla provided a link to the internal blog and information table, claiming that its driver assistance technology helps ensure the safety of everyone on the road.
"Because every Tesla is connected together, we can use real-for more than 10 billion miles-
"The world data collected by our global fleet-more than 1 billion of which are driven by self-driving participation-is designed to continuously improve our products," said one of the blogs . ".
Tesla began releasing quarterly car crash frequency statistics last fall, saying media reports of its crash were exaggerated.
In the fourth quarter of 2018, only one accident occurred every two accidents.
Its blog says self-driving is 91 million miles compared to every 436,000 miles of accidents in all cars across the country.
In the crash test in 2013, Tesla has achieved the perfect 5-
NHTSA's star rating prompted Tesla to claim on its blog that its models S, X and 3 are the safest models the agency has ever tested.
Last fall, NHTSA questioned Tesla's "safest"
It's beyond its scope of analysis.
Tesla's statement about the safety of its battery compartment could surprise the first responders to two crashes in South Florida.
After the Fort Lauderdale accident, the company sent a previously issued statement to the South Florida Sun Sentinel saying that the vehicle was 10 times more likely to have a fire than a petrol vehicle.
It says they are "safer" when a fire occurs because they consist of thousands of separate batteries-similar to the AA batteries used in consumer electronics-divided into different modules, there is a firewall battery pack and passenger compartment "between the modules ".
Each module is sealed to prevent gas and heat from igniting adjacent modules, so "in rare cases fires spread much slower than gas fires," the statement said: "give passengers more time to escape the vehicle. ".
However, in the crash in Fort Lauderdale and David, the fire quickly swallowed up the vehicle and stopped efforts to rescue passengers.
In the Davie crash, the car was swallowed up by the fire, blocking any attempt by rescuers to withdraw the driver.
A witness to the Fort Lauderdale crash said the car caught fire immediately after a second collision with the walls around the house.
Witnesses said the intensity of the fire prevented bystanders from entering within 10 feet of the vehicle to help two teenagers trapped inside the vehicle.
When Tesla posted proof of car safety on its blog, the user forum section of the company's website also included unsafe anecdotes from Tesla ownersso-
Safe experience while driving.
One described her car turning to the left lane in both self-driving and auto-Lane mode and turning again.
"It really scared me," she wrote . "
Another description of the touch screen display of the car, almost all functions are controlled, suddenly blacked out and restarted while the car was running.
In a 2016 Post, a car owner described "two terrible close calls" when using an autopilot ".
One of them was, "we drove 70 miles an hour on a straight highway and started approaching a completely stopped traffic jam ".
But the car did not stop or slow down.
"All of a sudden, the alarm sounded, the autopilot got out, and (I) had to step on the brakes to prevent it from hitting the stopped car.
"The second time, the car began to turn to the left lane and almost hit another car next to it.
"This thing scared me," the owner wrote . ".
While Tesla warns customers to be vigilant when using autonomous driving, some critics question whether drivers can be vigilant when giving up so much control.
Benedict Evans, partner of Andreessen Horowitz, a venture capital firm investing in technology, said on Twitter that the "2/3 method" of autonomous cars followed Tesla, "if humans don't drive, but at any time it is possible to have to grab the steering wheel, which is very dangerous and technically dead end ".
In the early March, a Florida man vacationing in Los Angeles was shocked by what he saw on the highway at 75 miles per hour in the Tesla rolling next to him: the Tesla driver fell asleep.