![]() With ramp metering, vehicles are released individually, with brief interludes between, creating an even, less-disruptive flow onto the highway.īut after construction was completed, some of the ramp meters created minor traffic jams of their own on the entrance ramps, even pushing vehicle queues back onto the roads from which the cars came, complicating traffic flow there, said PennDOT spokesman Ron Young.Īs a result, the lights were shut off and officials said they had to recalibrate the computer programs, altering software designed for the lane restrictions, slower prevailing speeds and other construction-zone conditions to a system tailored for free-flowing highway travel. Officials said the signals proved successful during the construction project, helping prevent groups of cars from rolling onto the highway in clusters, jamming things up as you describe, Tom. I’ve received many e-mails regarding the signals through the years though, almost all of them positive, urging PennDOT to restore the 14 signals – $230,000 worth, according to the state. The experience has fallen through the floorboards of my mind, where the cracks seem to be widening at a ferocious pace. I do recall avoiding Route 22 as much as possible during the construction, though I certainly must have encountered the signals at some point. In 2011, ramp meters began being installed on certain interstate on-ramps in the Reno area as well.For some reason, I can’t even remember the operation of the signals, or “ramp meters” in engineerese. The Nevada Department of Transportation and partners have installed ramp meters along certain major Nevada interstates and freeways, particularly in the Las Vegas area. Freeway accidents can be reduced due to ramp meters. Ramp signals provide a smoother traffic flow, which minimizes stop-and-go traffic. Research shows that most freeway accidents occur during stop-and-go traffic. By controlling the frequency and spacing of vehicles merging onto a freeway, ramp meters minimize freeway speed disruptions and improve traffic flow. Ramp meters create a safer, less congested freeway. When many vehicles merge onto an already-crowded freeway at once, drivers on the freeway are forced to slow down to let cars enter from the ramp, potentially causing sudden speed changes, backups and crashes.
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