China, with 50 lanes.
It's 110km/h in most places and 100km/h in other on the Freeway.
Yes, unless there are multiple designated U-Turn lanes for an intersection or freeway. (of course if they are not permitted, you don't period.) :D
The Trans-Canada Highway is also known by numbers, the most common of which is 1. The Trans-Canada Highway is also known as Highway 1 in all four western provinces plus Prince Edward Island and Newfoundland, and by a variety of numbers in the remaining four provinces. Many people think that the Macdonald-Cartier Freeway (a.k.a. Highway 401) in southern Ontario is part of the Trans-Canada Highway, but that is a misconception. No part of the Macdonald-Cartier Freeway is the Trans-Canada Highway. Highway 16 in the four western provinces is "a" Trans-Canada Highway, but not "the" Trans-Canada Highway. Highway 16 is also known as the Yellowhead Highway.
autobahn is a general term that refers to the entirety of the German expressways, not one single highway. Therefore the number of lanes varies, though most have 2 or 3, and an emergency shoulder. The older ones generally have 2 lanes and no shoulder, but some of the newest have up to 5 lanes (in each direction) and a shoulder.
State Central Cenneter Highway is a under construction highway from Brisbane, QLD to Perth, WA a non-stop road via Mt. Isa, Darwin, Broome, Port Hedland and finally finished up in Central Perth. This road is expected to be around 8,500km long.
In most instances a lane of travel will be marked as the lane that is merging with the other lane or lanes. If so, the lane that is NOT ending has the right of way. When entering a freeway or Interstate roadway, the traffic already on the main lanes of travel has the right of way and the entering traffic has the duty to "merge" safely with the traffic already flowing on the main lanes.
55 is the most common speed limit on any 2 lane road. 65 is typical on most 4 lanes. 70 is common on interstates.
In most cases, a deceleration lane leads to an off-ramp or exit from a highway or freeway. This lane allows vehicles to safely reduce speed before exiting the main road.
By definition, a divided highway has a midline area that divides the lanes that go in each direction. Some have fences, cement or planted medians or more. It has two solid lines running down the center (most often in yellow). Or it has an actual barrier of some kind. It is significant in that the vehicles on the opposite side of the road from you are traveling in the opposite direction. So, you can expect to see some oncoming traffic. You want to be sure that you're driving on the correct side of the road. However, if you are on road that has two lanes, but both lanes are going in the same direction, then that is not a divided highway.
You can't even drive a scooter on a highway. If you are trying to get somewhere, you must take slower back roads because most mopeds can only reach speeds of about 50mph.
AnswerInattention and speed.
In Washington State... You will notice that all freeway on ramps have a posted speed limit lower than the freeeway speed limit. When merging onto a freeway, the merger does not have the right of way and must yield to faster oncomming traffic. Now, it's different if you are driving on a road with two lanes where both lanes flow traffic in the same direction. If a two lane highway merges down to one lane the person in the merging lane has the right of way if their vehicle is ahead of you where the two lanes form one. This reply is confusing. The merger (or accelleration) lane is intended for vehicles to get up to the speed of traffic. Although you do have to yield when you enter traffic, you should be able to slip into traffic if you are up to speed. One of the most common reasons people have to stop driving on the freeway is because they can't comfortably speed up to the posted speed limit and still find a gap to enter traffic. The same is true with exiting the freeway. Enter the exit ramp at highway speeds and slow down after you are on the deceleration ramp. Freeways are intended to run smoothly and that is why you should use the ramps to gain speed and to slow down.