Worldâs first parking meter installed. Share this: The worldâs first parking meter, known as Park-O-Meter No. 1, is installed on the southeast corner of what was then First Street and Robinson Avenue in Oklahoma City, Oklahoma on this day in 1935. The parking meter was the brainchild of a man named Carl C. Magee, who moved to Oklahoma City from New Mexico in 1927.
Check rate of air pressure buildup: When the engine is at operating RPM, the pressure should build from 85 to 100 psi within 45 seconds in dual air systems. (If the vehicle has larger than minimum air tanks, the buildup time can be longer and still be safe.
A GCWR of 26,000 pounds is an important number â not enough room here for a debate over commercial driverâs licenses, but any truck with this rating or lower wonât need an air brake endorsement on a driverâs license. Once you go above 26,000 pounds, a 12 percent federal excise tax for commercial trucks kicks in.