The autonomous vehicle, or self-driving car, has become the focus of the automotive world. More and more, you hear that the connected car is the answer to a variety of transportation ills. From Google to Volvo to Ford to Uber and Lyft, the industry of moving you from one place to another is working feverishly to make the once science fiction dream of a driverless vehicle a reality. However, this seemingly 21st century innovation has not only been in people’s minds for centuries, but attempts and working prototypes have been pursued across the ages.
What exactly is an autonomous vehicle?
The autonomous vehicle label has become quite the buzz. But what makes a regular, everyday car into a self-driving connected car? An autonomous vehicle is any car that drives itself through a set of computerized controls hardwired into the automobile’s brain or electronic control unit (ECU). The idea has been the stuff of dreams since as far back as the great Leonardo da Vinci with his horseless carriage idea, an invention meant as a novelty to surprise and delight attendants of festivals during renaissance times that would take centuries to figure out how to build.
While there have been several attempts throughout the years to make a self-driving, fully autonomous car come to life, success has been elusive. However, the interest has never wavered and the automotive world and general public became even more energized with a look into the future that sent minds reeling at the 1939 World’s Fair in New York.
General Motors and dreams of innovation
General Motors (GM) is no stranger to vehicle innovation. It was the first automaker to envision a type of autonomous technology with the presentation of a computerized navigation system for its cars known as Driver Aid, Information and Routing System (DAIR) back in 1966. The ambitious yet unwieldy invention would lead to the creation of OnStar in the 1980s. Therefore, it comes as no surprise that GM presented their idea of the self-driving car at the 1939 World’s Fair in New York.
The tagline of the storied pre-World War II extravaganza was “The World of Tomorrow.” Hundreds of thousands of visitors flocked to the extraordinary promise of a unique and technologically advanced horizon shown throughout the fairgrounds. GM’s pavilion featured the most popular attraction called The Futurama, a ride that took visitors through what life would be like in the year 1960. While the exhibit was more about urban planning and creating a highway system—which wouldn’t become reality until 1956—tiny radio controlled cars that automatically kept their distance from each other were presented on the roads, a precursor to adaptive cruise control and autonomous vehicle technology. This future vision was crafted by mercurial theatre and industrial designer, Norman Bel Geddes. While 1960 has come and gone and the glorious, smooth driving fully autonomous future has yet to be realized, the commitment to and belief in a driverless world is stronger and more pervasive than ever.
Why self-driving car technology matters?
Driving a car is essential to many people’s lives. Getting behind the wheel of an automobile and transporting yourself, others and supplies or equipment for work, play or charity, have led to the continued—albeit sometimes shaky—growth of what is now a multi-trillion dollar automotive industry. The automobile has been in consumer use since Karl Benz and Gottlieb Daimler created their vehicle empire in 1895 then made even more accessible when Henry Ford turned what was basically a luxury item into something the masses could afford. These horseless carriages have dominated the transportation industry ever since and incorporating autonomous technology to create self-driving cars has been a goal that may well have been prompted by Leonardo’s self-propelled carriage over five centuries ago.
The “Linrrican Wonder,” a 1926 Chandler rigged with a transmitting antenna, became the first documented case of a “driverless car” that same year. It “drove” through the streets of New York City while controlled by a follow vehicle. Having a tracking car may seem to negate the fully autonomous goal of a driverless vehicle, but the Linrrican Wonder maneuvered on a public road in the most populous city in America even back then, giving hope to the automotive industry of a future it continues to fervently pursue to this day.
Huge strides continue to be made in the world of self-driving cars which are propelled by 3 major issues on the road today: traffic congestion, road fatalities and environmental impact. But will driverless cars really alleviate all of these problems?
There’s a two-pronged effect here with autonomous vehicles. Shared self-driving cars lead to less automobiles on the road. Also, operator error causes the bulk of traffic accidents which then leads to even more traffic congestion—slowing down to rubberneck, lane closures, etc. Autonomous vehicle technology incorporates such systems as collision avoidance and adaptive cruise control to create both safer conditions and smart distance between cars. These two together allow the vehicles to keep pace with and from each other in ways that keep the flow of traffic consistently moving.
Staying alive on the road
2015 saw 35,200 car-related deaths in the U.S. alone. This staggering number has prompted the Department of Transportation (DOT) to push for policies that more actively regulate self-driving car research and development. Human error accounts for 94% of all fatalities on the highway and implementing innovative vehicle technology in the form of fully autonomous smart cars is felt to be the answer. Again, collision avoidance systems play an integral part in keeping passengers safe and lowering traffic fatalities and accidents in general.
Lower emissions and better fuel efficiency
An autonomous car is designed to be more fuel efficient not only by the mere fact that many use alternative fuels, but the way they travel in conjunction with other vehicles and on the road in general. These vehicles are built to move in such a way that they make the best use of their fuel and brake/accelerate more strategically, thereby reducing whatever gas emissions they produce or drain on a power cell. Traditional and adaptive cruise control (ACC) acts as a strategic partner in supporting this by automatically maintaining an ecologically friendly rate of speed.
The ins and outs of self-driving car technology
What makes a self-driving car drive itself? It’s a combination of a variety of interfaces and connections. Per engineering professor, Sridhar Lakshmanam of University of Michigan—Dearborn, three things are needed to make an everyday vehicle successfully navigate a public road autonomously: a GPS, a system that reads road conditions, and a processor that takes all of that data and turns it into action.
The GPS needed is pretty much the same type of system used today. It provides a basic view of maps and where the car can go. Radar and lidar sensors are instrumental in the system that can see road conditions as are on-board cameras.
Radar uses radio waves to distinguish what is going on around the car while a lidar sensor uses lasers to detect the environment, obstacles and more by sending out a series of light pulses at specific intervals to pick up external information. These combine with the on-board cameras to take all of the information of what is going on around the vehicle—the environment and dynamic situations—and send it to the brain so the car can actually react—brake, accelerate, turn, etc.—accordingly.
On-board cameras also contribute to the successful operation of autonomous vehicles. These visually capture the conditions and potential hazards of the road in real time and process that information through sophisticated computer software. The car’s brain then takes that and
Part of this smart communication is vehicle-to-vehicle (V2V) interaction. The ability for cars to speak with each other will help in making this driverless future a safe reality. Per the National highway Traffic Safety Administration (NHTSA) one automobile can relay various “important safety and mobility information” to another, thereby supporting the three goals mentioned above: alleviate gridlock, save lives and lower emissions. And with safe future comes changes to government.
The ups (and downs) of the autonomous vehicle
Due to the nature of less human interaction, an autonomous vehicle means fewer parking and moving violations, which provide a good chunk of money into local and state agency coffers. However, the safety and strengthening of the transportation systems save government and taxpayers money and lives. The Brookings Institute breaks it down as follows:
- An estimated $10 billion per year saved by taxpayers due to the public shouldering the bill for seven percent of vehicle crash costs
- A savings of $100 billion per year due to the elimination of congestion, damages to infrastructure and resources spent on road improvement.
- Cutting travel times by sending vehicles to better road options which saves on the cost of fixing roadways and bridges
- An overall estimated savings of $211 billion a year to state, local and federal governments
With all of this possibility, however, it begs the question: just how ready is the public to hand over the controls they’ve come to know with their automobiles?
The steering wheel (gear shift, pedals…): to be or not to be?
As mentioned, the motor car is the most influential mode of transportation in the world. It is a staple of modern life and a symbol of autonomy, even in its purest form. Part of that comes from the ability of everyday humans to have total control over their automobile by being able to steer it themselves and operate the different gears and pedals to make it run. But in a fully autonomous, self-driving car, is it really necessary to have all of those accouterment?
Per a recent Kelley Blue Book poll, most Americans couldn’t even begin to imagine embracing a fully autonomous vehicle—called a Level 5 by both NHTSA and Kelley Blue Book. 80 percent of those polled believe human drivers need to have the ability to operate their car and 64 percent claimed they need to be the ones driving their automobiles, not some technology. While there are ranges of feelings about actually using the self-driving capability—short jaunts were felt to need operator control while autonomous vehicle technology would be welcome on long road trips—the space for human intervention in the midst of unforeseen circumstances is still felt to be necessary.
Different levels of autonomy
As mentioned, both the NHTSA and Kelley Blue Book have identified 5 stages of autonomy for cars. Both adhere to the levels as outlined by the Society of Automotive Engineers (SAE) International. They breakdown as follows:
Level 0: No Automation
The human driver has full control of the car, even if there are upgrades and technological advances in the vehicle. The person behind the wheel is the one who reacts to every situation.
Level 1: Driver Assistance
Most of the operation is handled by the driver. Some, however, like braking, can be automatically managed by the car through the data it retrieves from road conditions.
Level 2: Partial Automation
Again, the human controls most aspects of the vehicle, but some things like cruise control or lane correction are automatically handled by the vehicle as well as acceleration and deceleration based on the information gathered about the drive. The person behind the wheel, however, is expected to be the primary operator, managing the rest of the manipulation of the car as well as taking over from the automated functions should the situation arise.
Level 3: Conditional Automation
Pretty much every task a driver would perform is handled by an automated system. However, here there is the ability for the human to take control when their intervention is requested by the computer.
Level 4: High Automation
There are still a steering wheel, gas and brake pedal, and a gear shift in this level, but all of the driving is automated and there is a failsafe should the driver fail to engage when the system asks for their assistance.
Level 5: Full Automation
The car is completely automated and prepared to handle all road conditions and situations that can and will arise during the ride. The driver is turned into passenger and their assistance is not requested nor needed.
As you can see, these last three levels move from minimal mechanical driver assistance—a human operator maintains control while the car has certain enhancements to help make their drive smoother and safer— into an area where the vehicle is now actually monitoring the driving environment and reacting automatically. This is a future leap that is available in limited models for Level 3 and in test phase with fleet vehicles in levels 4 and 5 under controlled conditions on public roads —Google self-drive now known as Waymo and Uber, for example.
Paving the road to the future
The initial estimate of when driverless cars will truly be on the road is 2050. However, with Ford embracing the autonomous vehicle movement rather than fighting it, Baidu in California, and much more, “The World of Tomorrow” may be just around the corner. The progress to a more dynamic driverless future is constant, so keep your eyes on the road ahead.