Have y'all seen this? There will be an exit off the highway with a yellow sign that says "exit 30 mph." Well, if the speed limit on the highway is 60 mph and the speed limit on the service road is 50 mph, then wouldn't it create a dangerous situation to slow down to 30 to exit? Don't you friggin hate it when people hit their brakes on the highway before they even get to the exit? It backs up traffic and impedes the traffic flow. Does anybody know the reason why they put these signs up at exits???
2006-11-12 17:15:59 · 20 answers · asked by Reject187 4 in Politics & Government ➔ Law Enforcement & Police
The National Highway Traffic Safety Administration (NHTSA) and the National Department of Transportation conduct scientific tests using various types and sizes of vehicles to determine the safest speeds that vehicles should travel on exit ramps and other roadways. These tests use on-board computers that measure various scientific calculations. In a nutshell, those little yellow speed limits signs, called prima-facia speed limits, are the fastest speeds that the worst types of vehicles can take the ramp and still be safe. For example, let's say you drive a Ford Mustang. It's designed to handle better than a SUV or 18 wheeler. You could probably take the exit ramp at the full speed and be OK. However, try that in an SUV or a fully loaded tanker truck and the outcome would not be pretty. Besides, you might run into someone like me who will be telling you to "sign here, press hard, five copies." Or even worse, you might be carried away in an ambulance or a hearse.
2006-11-12 18:19:01 · answer #1 · answered by gablueliner 3 · 0⤊ 0⤋
Yellow roadway signs are placed to serve as a warning and a recomended speed at which to travel through the area safely. They are not "speed limit" signs per se however you can still be cited for exceeding the recommended speed under certain circumstances. Here's a real life example.
If the speed limit on a roadway is posted at 55 MPH and the police catch you driving 70 MPH the police can ticket you for exceeding the posted speed limit. If the recommended speed for an off ramp is 30 MPH and you travel it safely at the posted recommended speed, you are safe from a ticket. Now this is where things get tricky and officer discretion comes into play. If you travel the same off ramp at 40 MPH - or any other speed below the speed limit - and do so safely, you shold be fine. However, if you drift over the lane lines or otherwise show that you are driving too fast for the conditions, then you may be cited for violating what we in California call "The Basic Speed Law." This law says that if you are driving too fast for the conditions present you are violating the law.
Anyway, your best and safest recommendation is to follow the speed on the yellow sign.
If you want to read the actual wording of California's basic speed law it is CVC 22350.
2006-11-12 18:09:43 · answer #2 · answered by James P 4 · 2⤊ 0⤋
30 Mph Sign
2016-10-30 21:17:31 · answer #3 · answered by ? 4 · 0⤊ 0⤋
Because the exit ramp probably has a sharp curve or grade and it would not be safe for some vehicles (loaded tractor trailers) to go faster than that. In Canada the yellow cautionary speed signs like that are only caution signs and the speed is a suggestion. You can't get a speeding ticket if you go faster than that.
2006-11-13 00:40:22 · answer #4 · answered by joeanonymous 6 · 0⤊ 0⤋
It means that once you exit the highway, slow to 30 mph. It usually means that that is the safe speed for the grade of the exit.
And, YES, I hate it when people slow down before exiting. Exit, then slow down. And get off the cell phone and pay attention.
2006-11-12 17:43:56 · answer #5 · answered by tnmack 3 · 3⤊ 0⤋
Yellow signs are only advisories. They are there to help ensure your safety, but they can sometimes be too slow (like in the mountains around where I live). The speed limit is still the same as it is before, but with such a substantial difference I'd recommend slowing down at least partway...maybe 40 or 45mph. But please wait until you are actually on the exit ramp (if it's long enough) or slow down GRADUALLY before you get there.
2006-11-12 17:58:06 · answer #6 · answered by beethovens_sixth 3 · 0⤊ 0⤋
cause exit ramps are narrow, often 1 lane, and they often curve around. You don't just drive 80 mph and then slam your brakes to get to 30mph. You gradually slow down a little, then you hit the exit. With every speed limit the cops usually give you a lot of room to budge, so think of them as 40 or 45 mph signs
2006-11-12 17:19:18 · answer #7 · answered by Anonymous · 2⤊ 1⤋
They are not putting a limit of 30 mph to create traffic congestion. They would not want you to travel too fast that you could not handle your car around a curve or something like that.
2006-11-12 17:23:07 · answer #8 · answered by steve 6 · 1⤊ 0⤋
Usually it's when there is a curve in the exit. And as far as I know, it isn't an enforced speed limit, it is just a guide. Semis should reduce their speed, and everyone should in terrible weather. But for normal conditions, just go whatever speed you still feel safe at.
2006-11-12 17:19:15 · answer #9 · answered by jellybeanchick 7 · 2⤊ 1⤋
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2016-10-17 05:20:49 · answer #10 · answered by rochart 4 · 0⤊ 0⤋