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Nissan Sentra crash rating improves, now Top Safety Pick [w/video]

After a poor showing in the hands of the Insurance Institute of Highway Safety back in 2013, Nissan is back for another round of crash testing with its 2015 Sentra, and it's walking away with a Top Safety Pick. The compact sedan's small overlap front crash test rating improved from "poor" to "good", owing to internal improvements to the A-pillar, door sill and front structure, IIHS said in a statement. The dummy, in this most recent test, was at a low risk of injuries because of the structural changes. Take a look at video of the Sentra's small overlap crash test, available up top, and the official press release down below. 2015 Nissan Sentra earns TOP SAFETY PICK award ARLINGTON, Va. - The 2015 Nissan Sentra has improved from a poor to good rating in the Insurance Institute for Highway Safety's small overlap front crash test, qualifying for the TOP SAFETY PICK award. The small car's front structure, A-pillar and door sill were modified to reduce intrusion in small overlap crashes. In addition, the side curtain airbag was lengthened to protect the driver's head. In the latest test, the driver space was maintained well, with maximum intrusion of less than 5 inches at the lower door hinge pillar. The dummy's movement was well-controlled. The head hit the front airbag and stayed there until rebound, while the side curtain airbag had enough forward coverage to protect the head from contact with side structure and outside objects. Measures taken from the dummy indicate a low risk of injuries in a crash of this severity. In contrast, the 2013-14 Sentra didn't hold up as well in the test. Intrusion measured as much as 13 inches at the lower hinge pillar. The dummy's head slid off the left side of the frontal airbag, and the side curtain airbag didn't offer adequate coverage. Measures from the dummy indicated that injuries to the left leg would be possible in a crash of this severity. Introduced in 2012, the small overlap test replicates what happens when the front corner of a vehicle collides with another vehicle or an object such as a tree or a utility pole. The Sentra's good ratings in the moderate overlap front, side, roof strength and head restraint tests carry over to the 2015 model year. To qualify for the 2015 TOP SAFETY PICK award, a vehicle must have good ratings in those four tests and a good or acceptable rating in the small overlap test. Related Video:

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

Some NY cabs could avoid hybrid ban

The Nissan NV200 is having a rough go of it as New York City's Taxi of Tomorrow. The Greater New York Taxi Association wants the van banned on the grounds that it isn't a hybrid, and has gone so far as to sue the city to keep the NV200 out of taxi fleets. According to The New York Times, the city has responded by proposing to allow taxi drivers to use certain hybrid vehicles. The Taxi and Limousine Commission's proposal would allow any vehicle with an interior volume of 138 cubic feet or more. Unfortunately, that excludes nearly every machine that isn't the size of the NV200.
Technically, Nissan is working on a hybrid version of the Taxi of Tomorrow, but it may be years before that model hits the streets, and the Greater New York Taxi Association isn't satisfied with the city's offer. In a statement, the Association said, "These rules look like they have been created to short-circuit the litigation. We do not consider this to be a serious proposal."