Automobile Industry

I am glad that I had a manual transmission and learned to drive stick shift years ago

I am glad that I had a manual transmission and learned to drive stick shift years ago. Probably in 25 years with electric cars children won’t understand why cars had gears you had to shift or transmissions at all. Electric cars don’t have torque bands or gears because electric motors don’t need them as they have 100% torque at any speed, only limit on torque is current supplied to the motor. Even big electric buses, trucks and trains have only one gear.

Gas engines have to be turning at least 2,000 rpm to have much power and 3,500 rpm for full power. Electric motors have full torque at 1 rpm or 3,500 rpm, the only limit in torque is current supplied. Technically you don’t need to gears with a gas engine with a high stall speed torque converter as the slip in the torque converter can allow the engine to spin at a speed faster than the wheels, a feature aggressively exploited in an early automatic transmissions with one or two gears but allowing a lot of slip wastes a lot of energy. Buick made a one speed automatic transmission in the early 1960s – the car was painfully slow and got 6 MPG on a good day. Modem automatic transmissions limit the time they are slipping by having multiple gears and having gears that fully lock at highway speeds.

Michigan’s 75-MPH Speed Limit Has Made Highways More Dangerous

Michigan’s 75-MPH Speed Limit Has Made Highways More Dangerous

Speed can still kill. That's the lesson Michigan is learning on the 600-plus miles of rural freeways where the speed limit was raised from 70 mph to 75 mph thanks to a 2017 law. With the number of drivers now going over 80 mph on the increase, more people are getting into crashes and losing their lives.

Bridge Media analyzed state police records and found that roads with the new 75-mph speed limit had, on average, more crashes and injuries in 2018 (the full first year for the new limits) compared to the entire road network. While the statewide average for crashes rose 3.4 percent in 2018 compared to the annual average from 2014-16 (remember, the speed limits went up part of the way through 2017), the average on the 75-mph roads went up 17.2 percent, Bridge Media found.

The real-world average speed increase on the 75-mph roads in one single-day test sample was just under 2 mph (from 74.6 mph in 2016 to 76.9 mph in 2018), but the total number of people going over 80 mph went from 10 percent to 40 percent of all cars. The result for some rural Michigan roads is that plenty of people are still driving well under 75 mph, but more are now going even faster.