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Driver assist system in VW I.D.4 electric car.

There was a time when sophisticated driver assist systems were the realm of luxury cars. The reason is simple, really. The cost of any new tech innovation is high, and it’s easiest to bury this cost in higher end vehicles offered at a premium price. It was thus with many innovations we now take for granted in our cars like air bags and anti-lock braking. These days, the most desired driver assist and advanced safety systems are pretty much standard fare in most new models.

We were impressed years ago when Honda launched its ‘Safety for Everyone’ program and made its latest safety innovations standard fare on all its vehicles. The auto industry as a whole has followed suit, and now even the most sophisticated systems can be found on entry-level models, increasingly as standard equipment or as available options. While drivers of premium vehicles may still be the first to experience the latest new twist operating silently behind the scenes as they drive, you can be assured the technology will filter down to all models over time.

Head up display in the Kia EV6.

Driving Safety Is Paramount

There are reasons for that because safety is always on the minds of new car buyers. The availability of systems that keep drivers and their families safe on the road, or at least as safe as possible, are highly desired. Automakers know this. Active and passive safety offer a competitive advantage in new car sales, right alongside other traditional touchstones like value, style, dependability, efficiency, and performance. If a new and highly-desired feature is introduced by one brand’s vehicles, there’s no doubt you will be seeing it offered in competitive models soon enough. There’s too much at stake for automakers not to emphasize safety, just as they emphasize electrification, efficiency, and environmental performance in their new model vehicles.

These days, technology is an active participant in our driving experience, constantly looking to warn us of unsafe conditions and offer alerts, and sometimes even initiate last-minute control to avoid an imminent collision. Their importance can’t be overstated. In the early years of driver assist systems, there were claims and assumptions regarding their promise for preventing potential collisions and saving lives. Now there is actual data to support this.

Lane mitigation systems warns of straying from your traffic lane.

Driver Assist Systems Prove Effective

Recently, GM partnered with the University of Michigan Transportation Research Institute to study the real-world effect its driver assist, active safety, and advanced headlight features were having in preventing or lessening various types of crashes. The study involved data from some 3.7 million GM vehicles across 20 models, making use of police crash report databases from 10 states. Comparisons were made involving vehicles equipped with advanced active safety features and others without this functionality.

The results showed that driver assist systems can make a dramatic difference in eliminating or mitigating crashes. Automatic emergency braking with forward collision alert was shown to reduce rear-end striking crashes by 46 percent. Lane keep assist with lane departure warning reduced lane departure crashes by 20 percent, with lane change alert and side blind zone alert bringing a reduction of 26 percent in lane change crashes.

Volvo driver assist system warns of a downed tree branch.

Even advanced lighting made a difference in driving safety. Here, high-intensity discharge headlights brought a 21 percent reduction in nighttime crashes involving pedestrians, bicyclists, or animals. In addition, advanced headlight systems that automatically turn high beams on or off in response to surrounding conditions delivered a 35 percent reduction. When combined, the two lighting systems resulted in a 49 percent crash reduction.

Advanced On-Board Electronics

Clearly, automobiles have become more complex over time. In their early years, an automobile’s electrical system was limited to fundamental functions like a starter, generator, headlights and taillights, instrumentation, and an audio system. Over the years this grew more extensive, including everything from navigation, electric-assist steering and braking, electronic transmission control, electronic ignition, anti-lock braking, an array of airbags, and advanced emissions controls.

On-board sensors identify hazards around a car.

Cameras, Radar, and Sensors

Today’s more sophisticated automobile integrates all this and more, from active safety assist systems and real-time traffic navigation to semi-autonomous driving, all enabled by on-board computers. Industry experts point out that today’s vehicles are often equipped with hundreds of controllers and sensors, and dozens of on-board computers (electronic control units, or ECUs), generating tens of gigabytes of data every hour. It’s expected that the coming generation of fully autonomous vehicles could generate upwards of 30 terabytes every day.

Supporting the electronics that process, analyze, and activate, the array of cameras, radar, and LIDAR sensors strategically and discretely positioned around a connected car ‘see’ vehicles, objects, and people ahead, around, and behind. These feed information to on-board systems that enable everything from the view seen in a back-up camera to determining the speed of a car in front of you, allowing adaptive cruise control to adjust your speed to avoid overtaking the vehicle ahead.

Panasonic driver assist system warns of a bicycle rider ahead.

These sensors are constantly evolving and improving, a necessity as we head toward fully-autonomous driving. While LIDAR continues to be a favored system by automakers, other innovations are in the works. One example is next-generation radar systems. Until now, vehicle radar has been limited to capturing just speed and direction, which is one of the reasons why vehicles use multiple sensor types for their driver assist and semi-autonomous driving features. Now, the newest long-range radar designs will determine an object’s speed, range, direction, and elevation, even at higher speeds and under challenging lighting or weather conditions.

Vehicles Have Evolved

Evolution is a hallmark of life, and it seems, of driving. Even as our cars are getting more complex in every sense as they adapt to modern life, they are also getting smarter…and safer. All that technology is delivering much more than the comfort, performance, entertainment, and driving pleasure we’ve come to expect from modern vehicles over time. We now benefit from a more confident driving experience and enhanced safety on the road as well, with technologies like those described below serving as our copilot.

Nissan ProPILOT adaptive cruise control display.

ADAPTIVE CRUISE CONTROL: As a stand-alone system or as part of semi-autonomous driving systems, ACC works like conventional cruise control with the addition of sensing technology that determines the speed and distance of the car ahead. It modifies your set cruise speed to avoid overtaking that vehicle. Many systems can bring your vehicle to a full stop if needed. Some advanced systems even reference map data to anticipate upcoming curves, roundabouts, toll booths, and more, then automatically reduce speed accordingly.

AUTOMATIC EMERGENCY BRAKING: Coupled with advance warning of unsafe closing speed or other immediate hazards, this system will automatically apply emergency braking to help avoid or mitigate a collision. Rear and pedestrian AEB is also offered as part of this system.

Blind spot detection in a Dodge Ram pickup.

Self-Driving Cars

AUTONOMOUS DRIVING: Sometimes confused with fully ‘self-driving’ capabilities not yet here or approved, to  degrees, today’s semi-autonomous systems can help keep a vehicle centered in its lane, pace a vehicle ahead at a safe distance, and often bring your vehicle to a full stop in gridlocked traffic, then resume driving when traffic in your lane is moving again. Some systems identify the pressure of hands on the steering wheel to allow continuing use of a semi-autonomous driving system, while others, like Cadillac, use a strategically-mounted camera that monitors a driver to confirm they are paying attention to the road ahead.

BLIND SPOT MONITORING: This system alerts a driver of vehicles in its blind spots to increase safety when changing lanes, passing, or being passed.

FORWARD COLLISION WARNING: Audible and visual warnings are provided to alert a driver of the potential of a forward collision. Some systems also provide brake pulsing as a further warning to gain a driver’s immediate attention.

HEAD-UP DISPLAY: A HUD projects driving information projected ahead of a driver’s view, sometimes as simple as mph but often providing info on various driver assist functions including turn-by-turn navigation.

LANE DEPARTURE WARNING: This system provides audible and visual warnings if your vehicle strays outside of its lane when a turn signal is not activated.

Night vision feature in car shows the road ahead on a dark night.

Improving Situational Awareness

LANE KEEP ASSIST: Taking over after a lane departure warning, this function provides varying degrees of steering input to help maintain lane position.

NIGHT VISION: Using infrared sensing technology, night vision displays an enhanced view of the road ahead that helps identify pedestrians, animals, or other hazards that may be beyond the view of a car’s headlights.

PARK ASSIST: This system enables a driver to select automated parallel, and sometimes perpendicular, parking functionality. It uses sensors to identify an open parking space of suitable size and the position of parked vehicles, then controls steering angle to automatically guide your vehicle into the space. Many systems require a driver to control braking, acceleration, and gear position, while others handle all functions automatically.

REAL-TIME TRAFFIC: Navigation systems that integrate real-time traffic information are valuable in saving time, fuel, and maximizing driving range with their ability to reroute around traffic jams and construction projects.

Mercedes-Benz park assist feature.

REAR BACK-UP CAMERA: Now found on a wide range of vehicles, a view to the rear is shown in a dashboard display or rear-view mirror when a driver shifts into reverse, often including grid lines depicting a driver’s angle of approach and relative distance from nearby vehicles or objects. Audible warnings are provided when objects are too close or a potential collision with an object, vehicle, or pedestrian is detected.

REAR PARK ASSIST: At low speed while in reverse, sensors detect objects and a potential collision, providing a warning brake pulse and then bringing your vehicle to a stop.

SURROUND VIEW CAMERA: This technology uses multiple cameras strategically positioned on a vehicle to provide a ‘birds’-eye’ perspective of the vehicle and its immediate surroundings.

The technology sector of the auto industry is advancing at a rapid pace. So fast, in fact, that if you blink something might be missed. New high-tech features are a key selling point in many higher-end or luxury vehicles today. It’s only logical that these new technologies launch in more expensive vehicles, because they are costly to engineer, develop, and produce. Premium platforms can more readily absorb the higher costs because they have greater profit margins.

That said, many of the advanced systems that were new to market just a year or two ago are working their way into more mainstream models. It’s simply the natural evolution of the car market. Coincidentally, many of these sophisticated on-board systems are now standard or optional features in electric, hybrid, and plug-in hybrid vehicles. Some of the latest electronic wizardry is targeting future autonomous transportation, or at least partial autonomous mobility. We are already seeing the first steps today. Some current production models feature automatic emergency braking to avoid an imminent collision or warn s driver if their car is drifting out of their lane. Some driver assistance systems also provide gentle steering input to keep a car centered in its lane if drifting occurs when a turn signal is not engaged.

Self-parking technology allows vehicles to parallel or head-in park without a driver touching the steering wheel, accelerator, or brakes. To accomplish this, a vehicle is equipped with sensors in the front, rear, and on the sides to determine distances to nearby objects. With that information, a car’s on-board computer can provide accurate control inputs to accomplish the parking sequence. Parking is done efficiently on the first shot, clearing the lane while saving both time and fuel.

The evolution of adding exterior cameras on vehicles began with rear-facing backup cameras. These transmit a real-time rear view to a dash-mounted display, allowing a driver to more accurately see what’s behind the vehicle. This very useful technology has filtered down to just about any car or truck with an LCD display. More advanced systems show the path a vehicle will take as the steering wheel is turned.

That was just the beginning. Cameras now proliferate in other locations on vehicles as well. The latest development places cameras on the sides of a vehicle, with some integrating eight cameras placed all around the vehicle perimeter. These provide information used in lane departure mitigation by reading lane markers and other side threats. When a lane departure is detected without a turn signal, some manufacturers alert a driver audibly and visually while others vibrate or pulse the steering wheel or seat to get a driver’s attention.

Another advantage of having cameras mounted all around the vehicle is the ability to show a birds-eye view of a car or truck on its LCD display. All camera views are stitched together to provide what can best be described as an image from a drone hovering above the vehicle. A top view image of the vehicle is superimposed in the middle. This takes back-up camera safety to a whole new level since a driver can check for pedestrians, small children, and other obstructions that might otherwise be missed from the driver’s seat. It is especially helpful in taller vehicles like trucks and SUVs.

Enabling much of the latest technology is the proliferation of LCD screens in the dash. Most of these displays are touch screen, providing increased control over various electronic functions. The goal is to provide the information and interface without it becoming a distraction to the driver, so eyes and attention aren’t diverted from the road for too long. To solve this, many systems now have a voice interface that allows the driver to push a steering wheel-mounted button and tell the car what they would like it to do, much like Apple’s Siri.

Of course, one of the first electronic functions to be integrated into LCD displays was GPS navigation. This handy function assists in driving more efficiently by suggesting the most direct or quickest route, thereby saving fuel. We’re all familiar with the way these systems adjust on the fly, redirecting a driver if you wander from the designated route by providing audible navigation prompts for getting back on track. This intelligent operation means eyes can stay on the road, an operating strategy that other ‘smart’ on-board systems would be wise to follow. Electric cars and plug-in hybrids can also find the nearest public charging station using most nav systems, a handy thing if you are driving in unfamiliar territory.

Traction control, a system that detects drive wheel spin and adjusts power and braking accordingly to keep a vehicle moving forward, has been with us for many years now. While not connected to the road in the ‘smart’ sense like the newest driver assist technologies, manufacturers are taking this concept another step with vehicle rotation and wheel speed sensors at all four wheels to keep the vehicle from spinning-out and losing control. Though there are different names for this technology, it is commonly referred to as yaw control since it detects rotation of the vehicle and applies power or braking to individual wheels as needed, thus preventing the potential for spin.

Technologies facilitating communication between vehicles and the surrounding environment hold great promise and are already being deployed to a degree. With car-to-car interaction, a driver could be alerted in advance to slippery conditions if a car ahead experiences wheel slip or traction control is activated. Two-way communication between vehicles can also be used to warn of road hazards, or by emergency vehicles to alert nearby drivers to proceed with caution or give way.

One of the most useful technologies to come out in the past few years is adaptive cruise control. This feature gauges distance to the vehicle in front when cruise control is set. If that vehicle is going slower than the set cruise speed in your vehicle, cruise speed will be reduced to match the vehicle ahead and keep a safe distance. Adaptive cruise control systems typically allow a driver to select the distance they feel is safe. Most systems will also bring your car to a complete stop and apply braking if necessary to avoid a collision or an object in the road.

This is made possible by the integration of forward-facing radar. The radar sends a signal out that bounces off vehicles or objects and is returned to the vehicle’s receiver. An on-board computer then calculates distance and closing speed to determine what appropriate actions are required. More advanced adaptive cruise control detection incorporates LIDAR (Light Detection and Ranging). LIDAR works much like radar but uses lasers to read distance.

In the not-too-distant future, cars will communicate with smart city infrastructures in addition to other vehicles on the road. Greater use of cellular signals for this communication plus satellite information will also be required. Work on this front is already well underway as it will be necessary for implementing both semi- and fully-autonomous vehicle operation.

All of this new and future connected technology requires considerable computing power inside the vehicle, which will add weight and require a very stout electrical system. The connected car trend has considerable momentum and is sure to advance at a rapid pace in the future. So don’t blink…or you may well mist the next big breakthrough in this fast-paced field!

todd-kaho-leftThere is a strong push for self-driving autonomous cars sweeping the auto industry. It’s an interesting mix of competing companies merging with both the traditional car brands and the tech industry. The overriding assumption is that taking the driver out of the transportation equation is better for safety and the environment than human involvement in the operation of the vehicle.

Full disclosure right up front: I am not a fan of the idea of a car driving me rather than me driving the car. You see, the reason I fell in love with cars in the first place is rooted in the fact that I love to drive and want to stay connected to the road. And yes, I prefer a manual transmission over an automatic. The idea of climbing in a vehicle and telling HAL 9000 (reference from 2001: A Space Odyssey) where I want to go doesn’t have much appeal to me.

That said, I do like many of the technological advancements that are making self driving cars possible. They can contribute to both safety and efficiency. My favorite of those currently available is adaptive cruise control. With this technology the vehicle maintains a safe distance from the car or truck in front of you when the cruise control is activated. Most allow the driver to set the distance or buffer the car will follow. If you have the cruise control set on 65 and close on a semi that is doing 60 up a grade, the car will automatically slow to the speed of the truck in front of you. If you pull out to pass, your car will accelerate back up to the preset 65 mph speed if no other slower vehicles are ahead. Adaptive cruise control is becoming more and more common and works quite well.

Forward-facing radar is commonly used and sometimes laser and multiple video cameras as well to judge distance and closing speed. This technology can also safely bring the vehicle to a complete stop when approaching a stopped vehicle or other fixed obstruction. Automatic braking technology can be a life saver if a driver is distracted, falls asleep, or is otherwise incapacitated. And to think that is wasn’t all that long ago that antilock braking was the latest innovation, and now it is mainstream!

True autonomous cars, however, must have input from many other sources to know exactly what is happening all around the vehicle. Sensors to the side, for example, are used in modern lane detection and lane change anti-collision systems. These detect objects to the side of the vehicle and some read lane markings on the road. Most give an audible alert first to get the driver’s attention, but some will actually pulse the steering wheel if they think the situation is urgent. Vehicles currently use some of the same equipment to allow production vehicles to park with little driver input other than engaging the system.

A self-driving car needs to sense conditions 360 degrees around its perimeter. Multiple radars, sensors, lasers, GPS, and cameras must all work together for complete situational awareness. It’s a very complex business when you add in the ability to read traffic signals, watch for pedestrians, motorcycles, bicycles, etc. Car-to-car communication is also a key element in making this all work together.

Naturally, this doesn’t come without additional complexity and expense. I look for a future with vehicles that will always have a steering wheel in front of me and at least two pedals at my feet, though three would be better.

Mercedes-Benz says it will be bringing Car-to-X technology to the highway by the end of this year, enabling the exchange of information between similarly-equipped vehicles as well as between vehicles and traffic infrastructure. The move is part of Daimler AG’s ‘Intelligent Drive’ strategy’ that will make use of Car-to-X communication to alert drivers of potential traffic hazards so appropriate action can be taken to avoid accidents at an early stage.

Car-to-X technology expands the scope of existing vehicle sensors, such as radar or camera systems, reducing blind spots and enabling drivers to see around corners or beyond obstacles. According to Daimler, the goal is to expand the telematic horizon with ready-to-market base technology now that will enable a new generation of driver assistance systems to be developed in the future.

Safety and convenience are primary targets for Daimler’s Car-to-X technology. By using precise information on traffic conditions available via Car-to-X communication, the technology can also help improve traffic flow by controlling traffic lights. Plus, looking forward, the technology will also help further development of Daimler’s autonomous driving functions.

Mercedes’ Drive Kit Plus, in combination with a smartphone and the automaker’s Digital DriveStyle app, will provide simultaneous transmission and reception of information. Daimler says it is using a mobile communication-based approach because it promises to offer the quickest way to deploy this future technology and exploit the safety potential of Car-to-X technology. Importantly, a modular approach means that retrofitting Car-to-X technology to many Mercedes-Benz models is possible.