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I have the opposite opinion of painted-line bike paths: I'd rather they not be there at all. If they are there I feel forced to use them by drivers punishment passing me, despite the fact that the so-called bike lanes are full of glass, potholes and cars.

If they aren't there I feel like I get treated with more patience when I ride in my normal road position, about 75 cm from the kerb.



I both agree and don't agree, having recently cycled across the US and experienced areas with no cycle paths, painted cycle paths and separated cycle paths.

Obviously separated paths are the safest, although unfortunately in the US they often aren't maintained as well as the road surface, so for long trips it's usually more comfortable to cycle on the road anyway.

But when it comes to painted lines, the situation is a bit hazier. You're right that drivers tend to be ruder and more obnoxious when you - as a cyclist - leave the painted cycle path for some legitimate reason, like to avoid an obstacle or poor road surface... On the other hand, at least drivers who drive in places with painted cycle paths know how to share the road, even if they resent doing it.

For example, I can't count the number of times in the US where I cycled straight ahead in the straight ahead lane after the shoulder abruptly turned into a "right turn only" lane, only to have ignorant drivers beep and hurl abuse at me for doing what I was supposed to be doing. In areas with painted cycle lanes, the drivers understand that in this situation they are supposed to watch for cyclists, give way and then cross into the "right turn only" lane on the cyclists' right, instead of fuming and raging because a cyclist dared to follow the signage.

In places where drivers tend to be more educated about how to share the road, it might be the case that painted lines are more trouble than they're worth, but in the US I think it's still useful as a way to teach drivers how to handle having cyclists on the road.


> In areas with painted cycle lanes, the drivers understand that in this situation they are supposed to watch for cyclists, give way and then cross into the "right turn only" lane on the cyclists' right, instead of fuming and raging because a cyclist dared to follow the signage.

While this works to some extent when a right turn only lane is present, this actually sets the cyclist up for a right hook when the right most travel lane can be used to proceed straight through the intersection or turn right. In that case, the bike lane is still painted to the right and leads to the situation where a motorist making a right turn is to the left of cyclist traffic going straight through the intersection.

> [I]n the US I think [that painted lines are] still useful as a way to teach drivers how to handle having cyclists on the road.

The problem in the US is that they paint lines in such a way that there's insufficient lateral space between the cyclist and motor vehicles. Most US states have passed laws requiring motorists to leave at least 3 feet between their vehicle and a cyclist.

In the case where a general purpose lane is 10 feet wide and the adjacent bike lane is 4 feet wide, you end up with a siutation where it's not possible to leave 3 feet of distance between the motor vehicle an and the cyclist. A typical larger vehicle is about 7.5 feet wide from mirror to mirror. Centered in a 10 foot wide lane, they have 1.25 feet on each side.

A cyclist is about 2.5 feet wide. 2.5 feet centered in a 4 foot wide bike lane leaves 0.75 feet on each side.

0.75 feet and 1.25 feet add up to 2 feet, which means that the distance with both the motorist and cyclist centered in the lane they're in is not sufficient. This doesn't account for moving side to side within the lane for either the motorist or cyclist.


I think your calculation of car sizes is a bit wide. I think most cars in the US are around 6 feet wide. Even large minivans are only around 2m. Granted, the mirrors add width and some drivers add excessive dongles on the edge of that, but conscientious drivers of wide vehicles should already be accustomed to passing slow moving vehicles more carefully. In addition, in the places where there are proper dedicated cycle lanes, the lanes are painted inside a full-width shoulder, with space to spare on both the left and the right.

I found there were quite a few stretches of road in Florida, for example, where there were 3 or 4 lanes of high speed traffic going parallel to a painted cycle path in the shoulder. It wasn't the most relaxing place to ride, but it still felt safer than going down some of the highways and arterial roads in other states where there were few (if any) cycle paths, simply because the drivers had more visual aids (signage plus lines) to tell them what to do when they saw a cyclist. I felt more confident cycling even in other parts of Florida without the cycle lanes because despite the drivers being fairly inconsiderate, at least they didn't visibly panic when they saw me there.

It is important to compare like with like, though. A "cycle path" which is just a bit of different-colored paint in the gutter of an existing traffic lane is pretty much useless. But if the painted cycle path is explicitly painted in what would otherwise be a full-width shoulder, I agree with other commenters here that it allows more flexibility to the cyclist than a separated lane (e.g. in turning left without needing to do a pedestrian-style hook turn) and it has the side effect of teaching drivers how to more carefully consider other traffic.

I really think a lot comes down to driver education. For example in areas where there is frequently slow farm equipment or horse and buggies on the main road, drivers have learned how to share the road, so it feels safe to cycle when there is no cycle path or even no shoulder at all. Unfortunately my experience in a lot of the US is that most drivers don't know how to deal with cyclists, so they'll ignorantly tailgate, cut you off or abuse you just for following the road rules. I'm not sure if that results in more casualties, but it certainly makes the experience of cycling more fraught, which means less people will want to cycle, so there is a vicious circle of increasing driver ignorance. I think painted lines at least provide some antidote to that.


> I think your calculation of car sizes is a bit wide. I think most cars in the US are around 6 feet wide.

You're not including mirrors in the width of the vehicle. Typical exterior mirrors on passenger vehicles extend out about 6 inches from the body, so that adds a foot to the vehicle's width. My VW Golf Sportwagen is about 7 feet wide mirror to mirror. My Honda Odyssey is about 7.5 feet wide mirror to mirror. I've measured both vehicles by dropping a string from the edge of the mirror housing down to the ground, and marking it on both sides and measuring the distance between the marks. Take a look at the interactive graphic towards the bottom of the page by Cycling Savvy[1]

Commercial vehicles like tractor trailers and buses are 8.5 feet wide at the body. Their mirrors extend out further, meaning that they're close to 10.5 feet wide mirror to mirror.

[1] https://cyclingsavvy.org/lane-width-space/


I feel like I must be in a distinct minority because I personally prefer painted bike lanes over any other alternative. It's pretty rare in my own experience to have cars ignoring or being impatient with them (maybe because I like in a fairly bike-friendly city) I also don't like getting stuck behind really slow people in physically separate lanes where there's no room to pass.


We have 200 m total of segregated bike paths in my city so I don't have too much of an opinion on them.

My complaint is the feeling of being forced to use them when they are the dirtiest and most dangerous part of the road. They are just dashed white lines that were designed by someone who drove down the street in a Transit van once.

Since I've been moved to WFH I exclusively cycle on country roads, I feel like if we had more segregated bike paths in the city I wouldn't mind being stuck behind people, I feel like commuting or cycling into town is a different thing from cycling for exercise or as a sport.

I live in a country where cycling as a mode of transport is basically non-existent, 95% of the people I see on bikes are on road bikes and wearing lycra, so it's possible I'd feel differently about segregated lanes if there more of a cycling-as-transport culture here.


My issue is that painted bike lanes are also de facto loading, waiting, and short term parking zones. The bike lane existing makes car drivers more hostile when I'm forced to enter "their" lane because of cars blocking mine.

Yes sure this is an enforcement issue I guess. Why not just build a physical barrier that doesn't require enforcement though.


> I ride in my normal road position, about 75 cm from the kerb.

The rationale behind riding closer to the edge of the roadway is that drivers of motor vehicles have more room to overtake. But would a motor vehicle be able to fit between you and another motor vehicle in an adjacent lane when overtaking while leaving sufficient distance between their vehicle and the cyclist?

I would posit that's not possible, meaning that there is no benefit derived from riding closer to the edge of the road. I would also assert that it's actually more dangerous compared to just riding in the center of the general purpose traffic lane.


"I would posit that's not possible, meaning that there is no benefit derived from riding closer to the edge of the road. "

When you overtake a cyclist driving in the middle of the road, you have a longer time on the other side of the road while overtaking, than if the cyclist drives on the right. So that can mean, a driver will sometimes do a more dangerous overtaking and then in fact, endanger you, when he quickly has to change lanes again to abort the overtaking.


> When you overtake a cyclist driving in the middle of the road, you have a longer time on the other side of the road while overtaking, than if the cyclist drives on the right.

The amount of time needed to move completely to the opposite side of the road as opposed to straddling the center line time 2 is not significant. The amount of time to actually overtake the cyclist easily exceeds that by a factor of 10 or more. In other words, there really isn't any signficant difference in terms of the time required to complete an overtake.


A more dangerous overtaking than someone trying to 'squeeze' through without even going into other lane?


Physically separated bike lanes are even worse. You can't get out of them easily if you come across a lot of debris. And they are harder to street clean, so debris accumulates more.


As a counterpoint to the "harder to clean" argument, I can offer the following.

I've just been to Montreal, and with temperatures well below freezing and lots of recent snowfall, the segregated bike lanes were completely clear of snow. Every day. In the places I've been around town, I am not sure I've ever come across any significant debris, in any season.

This is in stark contrast with many (especially older) bike lanes in the UK, which are basically unrideable in any season as they're covered in drain covers, potholes and debris.

I think the difference here is not so much the difficultly of cleaning as the commitment to doing it.


Why would they be any harder to clean? A city can just have one of their sweepers be a much smaller, cheaper, sweeper. Likewise for snow clearing. A much smaller and cheaper machine can often be used.




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