Post by georgiacammer on Dec 30, 2014 23:27:17 GMT -5
A few weeks ago I had an assignment for my statistics class where I had to conduct a survey and analyze the data. So naturally I rode my bike, with pencil and clipboard in hand, to a nearby 5 way stop. The goal was to find out how many drivers come to a full stop (that means their wheels stopped turning) at their stop sign. If it was questionable, I just said they stopped. Instead of observing every single car, which is nearly impossible, I only selected cars that arrived when the intersection was empty. This makes sure they aren't influenced by the driver before them, and they aren't forced to stop because cars are in their way, which would skew my data.
OF the drivers who arrive only when the intersection is empty, I selected every third car for my data. Why? First, this make the data random. Also, I can't keep track of every single car. I wrote down data for 50 drivers, but hundreds of cars passed through the intersection.
As I was observing, there was this huge pickup truck with an even bigger trailer that came to a nice slow stop. And he stayed stopped. Maybe he was waiting for the flashing red light to turn green or something. There began to form a line behind him. After maybe 20 seconds, cars started going around him (not a single honk). After about 5 cars passed him, he seemed to realize the light would not turn green, and the stop sign would not say "go", and he started off again AS a car was passing him! He did, however, get a checkmark on my clipboard for stopping
By the way, I ended up throwing this data away because my survey was too simple and needed to be more complex.
Post by georgiacammer on Jan 1, 2015 13:53:35 GMT -5
That's really all the data I have, other than it was about 11am November 26, but I might go back and do another run and collect more specific data like car type (sedan, suv, etc.). One factor that keeps bugging me is that if drivers see me sitting there with a clipboard, they might catch on to what I'm doing and make a bigger effort to stop. Perhaps the results I gathered are a little optimistic!
Post by DontDentMyCar on Jan 2, 2015 23:33:15 GMT -5
they'd make a bigger effort to stop if you had a camera mounted to a tripod.
To do a real study you'd have to try several intersections all at different times of day/week, to see if the results are consistent or dependent on other factors, like rush hour, weather, etc. Although I wonder if the city may have some data too, you might want to compare their results with yours.
Ha, I've done similar 2.5h long statistics, using similar to yours methods (stop just because STOP sign), on THIS junction.
Exactly 250 drivers (cyclists excluded) were counted. 58 % passed, 42 % failed. However I accepted very slow motion (<3 km/h) as stopping. Interesting, every of 29 cyclists failed. Seven of them even watched on main road.
I'm sure the statistics may highly differ in any other junction.
Last Edit: Jun 6, 2015 12:44:02 GMT -5 by 130rapid
The driving is alike Chinese learning. It's lifelong.
Post by Bad Drivers of Columbus, GA on Jan 25, 2015 20:26:56 GMT -5
I've always wanted to do a survey here on how many people use their signal at a 4-way stop when they're turning. There's a 4-way stop on the way into town that would be perfect to do it at because there's a gravel area where you could park and observe everything.
When it comes to road safety, everyone, pedestrians, bicyclists and drivers, are part of a worldwide community.
Project Road Rush celebrates dash cam entrepreneurs and others, who take the time to illuminate the dangers of the road, and through their relentless efforts bring about awareness and change.
Of our many discussions and topics include:
-Bicycle and Pedestrian Safety
-Vehicular and Road Design
-Police, EMS, Ambulance, Fire
-People behaving badly
-Dept of Transportation Issues
-Other channels that deal with public safety including messages to children, teens and parents.
Join our community and get involved in defining a better future. Just register and join the conversation... it's that easy!
We do not track, email, or hound our members. The contribution is the conversation.
WhatCountsNow.org is PRR's Parent Organization:
KnowTheFundamentals is our sister organization: Lets find ways to teach our children to integrate safety into everyday life, to have a life without trauma.
PRR appreciates the efforts of SafeKids initiatives:
Be a Pro on the Road
PRR Tips to help you become a Driving Pro.
1) Don't wobble in a lane or hug a line, keep centered and steady. Being a predictable driver will save you from a collision.
2) Don't accelerate or decelerate quickly, smooth transitions help everyone including passengers.
3) Stay back from pedestrian crosswalks. It helps other motorists see the pedestrians, i.e. stop at that stop line.
4) Check around the pillars of your vehicle when turning. You might think it's clear only to be surprised by a pedestrian 'hidiing' behind your pillar.
5) When turning a corner, don't cut the on-coming lane. Imagine a quarter circle and make that your path. Being a pro means you don't need to correct your position after the turn to center yourself in the lane.
6) Always use your turn signal whenever changing out of your lane, and give that signal at least a second or two to alert others before actually turning. Too often people think that the signal isn't necessary. Those people should stop thinking what others need from them. Others, whether peds, bicyclists or other vehicles need to see what you are about to do to save themselves from a collision... so use that signal.
Pedestrian and Bicycle Pro Tips:
1) Walking or riding? Well look both ways even if you have a light. Do you really trust your life to a stranger and whatever condition or distraction they are dealing with? Don't assume they see the light or stop sign. After all, they have an entire vehicle to protect them, you don't.
2) Don't step off a curb without looking. Busses and electric vehicles (bicycles too) do not warn people of their approach with sound as there is very little sound generated by their movement or engines.
3) Practice good habits so that if you're ever distracted you'll more likely employ the good habit at the critical time you need it, to save your life.
4) It's called a crosswalk because you should always walk. If you're riding and want to use a crosswalk, dismount and walk. Walking gives drivers the chance to see you and stop if necessary. Darting across eliminates this important buffer.
5) Setting good examples will show children how to behave near a road, and in effect you will be saving their lives... so be a hero and save lives through your example!