Removing Traffic Jams in Cities

A steep underpass across road crossings which means that the speed of vehicles cannot exceed 50km/hr. Also, they are meant for cars so ceiling heights is only 2.6m, just like underground car parks.

We should use underpasses for all junctions instead of traffic lights. Traffic lights cause all traffic jams.

https://1drv.ms/w/s!AuDQXG4eStrWiscVgUiscA038AmWPA?e=UXYs5R

Comments

Traffic lights cause jams

Traffic lights cause jams. They worsen congestion by reducing lane capacity by half. This causes more congestion instead of relieving the congestion. When no congestion, lane Capacity is full, but with more traffic, the lights reduce them to half, making the congestion worse, so causing jams. I wonder why ignored by planners. Not even in textbooks the subject of congestion. Even journals never have a consistent definition of congestion. For drivers, cars not moving is called traffic jam. Not to the civil Engineers because at Traffic lights, cars do not move also. The solution is simple. Remove all traffic lights but forbid right turns. To turn right, you must do U-turns. Not difficult in cities because there are lots of buildings. These buildings are huge roundabouts. One other solution is one-way street. It was proposed by a consultant 10 years ago. Dr. Tan. I didn't support but now I understand why.

Respose to www.smartertransport.uk

Thank you for replying but you have misunderstood all the issues. 1. "an intervention like this, which increases road capacity" My proposal is not about increasing capacity. It is about improving capacity of lanes that already exist. It is a waste of resources if we cannot improve their efficiencies in the most economical way. 2. Congestion is wrongly defined. According to your definition, any long journey is a congestion then. This is false. Congestion should be viewed as how frustrated users are, not how long the journey should take. People are not frustrated if they know before hand how long a journey will take. Of course, everyone wants instant travel but practically it is impossible. 3. "reduce demand to travel" You view as though travel is something that people want. With this wrong assumption, all research data is useless. They don't like to travel. They have to travel. For example, going to the cinema. If we can have...

No more excuses for fatal road traffic accidents or jams.

Once it is clear that we can elimate all traffic lights and crossings, there is no more excuses for allowing fatal traffic accidents and jams. The most critical is the fatalities due to traffic accidents as a result of crossings,f even in the presense of traffic lights or roundabouts. We can elimate them by using no-crossing u-turns. The cost is so little that there will not longer be valid excuses for highway planners to allow any crossing at any junctiions, even to provide traffic lights. If there ever were fatal accidents at these crossings, the road users can sue for damages to the highway authorities. Ingorance is not a defence. I notice that, even in Sabah, there are so many junctions where crossing are allowed when we have enough space to provide merging lanes. Worse, these merging lanes were converted to crossings. There were many accidents at the crossings. A few of them are fatal and this time, the victims can sue the government for negligence in allowing crossings at j...

Removing Traffic Jams

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