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Toyota develops new pre-collision system with steering assist

A number of automakers are working on developing fully autonomous cars, but it looks like the groundwork for such technologies will likely show up first as semi-autonomous systems for both safety and convenience. Following recent announcements from Nissan and Ford in this area, Toyota has now released information for some of its advanced semi-autonomous technologies that could be offered in production cars over the next few years.
On the safety front, Toyota's new pre-collision system with pedestrian-avoidance steering assist is aimed at protecting the folks who aren't in the car. This system combines visual and audible alerts with automatic brake assist and automatic steering. If warnings don't get the driver to slow down, the brake assist kicks in if a collision is very likely, but if that is still not able to avoid the impending collision (and if there is enough room to do so), the car can automatically steer itself around the pedestrian. This sounds most beneficial for last-second dangers such as a person accidently stepping out into the road in front of a car. Toyota hopes to have this technology available to customers by 2015.
The Japanese automaker is also testing a suite of technologies called Automated Highway Driving Assist (AHDA). The key part of this is a new adaptive cruise control system that uses vehicle-to-vehicle (V2V) communications rather than a radar-based system. This cooperative-adaptive cruise control allows vehicles to communicate their acceleration and deceleration data with other cars, which Toyota says this helps to improve fuel efficiency and traffic flow. Also a part of AHDA is the Lane Trace Control feature, which sounds like a next-gen lane keep assist. This system uses cameras, radar and a computer to keep the vehicle in a "smooth driving line" by being able to change steering angle, engine torque and braking force. Toyota says this technology could be in place by the "mid-2010s."

2016 Lexus GS 200t First Drive

Last year, Lexus rolled out an ad for its GS that featured several luxury rivals swinging on pendulums, with a hypnotic voiceover that derides the BMW 5 Series' standard four-cylinder engine. The ad then asks viewers to, "Open your eyes to the six-cylinder, eight-speed Lexus GS." Oh, how times have changed. Consider the facelifted Lexus GS 200t and its four-cylinder turbocharged engine an admission that maybe the Germans are on to something. It's good to see Lexus getting with the times, but after a drive in Southern California, we find the first turbocharged GS comes up short in a lot of ways. This is the same engine Lexus uses in the NX, IS, and RC with 200t designations. The 2.0-liter four-cylinder uses a twin-scroll turbo, direct injection, and Toyota's most advanced continuously variable valve timing to produce 241 horsepower and 258 pound-feet of torque. That's 70 horsepower short of the GS 350's 3.5-liter V6. But torque is down only 22 fewer lb-ft, and the 200t's broad peak torque, from 1,650 to 4,400 rpm, promises ample usable power. The 200t offers little reward for the slower acceleration. As for that previously-mocked BMW 5 series, the Lexus has nearly identical output. But a 7.0-second 0-60 time is nearly a full second slower than the BMW's claim for the 528i, a car that weighs practically the same as the Lexus. Fuel economy is another head-scratcher. Lexus estimates the GS 200t F Sport returns just 20 miles per gallon in the city and 30 mpg on the highway, three and four mpg less than the 5er. This brand-new 2.0-liter turbo is hardly more efficient than the three-year-old GS 350. The V6 model nets 19 mpg city and 28 mpg on the highway, and is 1.3 seconds quicker to 60 mph. A smaller engine almost always means sacrificing performance for economy, but based on the figures the 200t offers little reward for the slower acceleration. At least the 200t is better from behind the wheel than on paper. We weren't that impressed by the low-end grunt of Lexus' 2.0-liter turbo when we drove it in the NX, but different gearing in the GS means snappier off-the-line behavior. Once the turbo catches up you're well into the heart of the torque curve, and the GS feels quicker than a seven-second jog to 60 mph. Mid-range punch is the engine's most endearing quality. Passing moves are easy and entertaining, even when you're already traveling at or above freeway speeds. Unfortunately, the engine gasps above 4,400 rpm.

Why Lexus shies away from plug-in hybrids

Lexus may have softened its stance a bit from the anti plug-in vehicle ads the Toyota luxury badge ran last year, but at least one executive from the company casts a pretty critical eye towards the concept as a way to cut both emissions and refueling costs. In fact, Lexus doesn't really buy the fact that buyers of plug-in hybrids are really looking to save both gas and the environment, Green Car Reports says, citing an interview at the recent New York Auto Show with Lexus executive Mark Templin. Templin also said hydrogen fuel-cell technology may be a better way to edge towards zero emissions. Templin decried plug-in hybrid technology because it adds weight to vehicles, which contributes to poor emissions figures in the process. He added that plug-in vehicle buyers are motivated more by potential tax credits and solo driving rights in high-occupancy vehicle (HOV) lanes than cutting back on fuel use. Last summer, Lexus ran an supposedly tongue-in-cheek print ad poking fun at how long it takes to charge a plug-in vehicle and how using air conditioning can shorten a car's charging range. Last spring, Lexus had to backpedal from an anti-electric ad it ran that had serious mistakes about hydrogen infrastructure. News Source: Green Car Reports Green Lexus Toyota Hybrid PHEV