traffic jam

Traffic congestion is a condition in transport that is characterized by slower speeds, longer trip times, and increased vehicular queueing. Traffic congestion on urban road networks has increased substantially since the 1950s. When traffic demand is great enough that the interaction between vehicles slows the speed of the traffic stream, this results in some congestion. While congestion is a possibility for any mode of transportation, this article will focus on automobile congestion on public roads.
As demand approaches the capacity of a road (or of the intersections along the road), extreme traffic congestion sets in. When vehicles are fully stopped for periods of time, this is known as a traffic jam or (informally) a traffic snarl-up. Traffic congestion can lead to drivers becoming frustrated and engaging in road rage.
Mathematically, traffic is modeled as a flow through a fixed point on the route, analogously to fluid dynamics.

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  1. RandellL

    Traffic Jam Assist

    We drove from a bit North of Sydney to West of Brisbane (circa 1000 km). We encountered two significant traffic jams on the motorway outside of Brisbane. I set the cruise control to the posted speed limit. The traffic jam assist was terrific! It made the stop and go driving much less...
  2. D

    Traffic Jam mode

    Hi everyone. I've picked up my ZS EV LR today, and was stuck in traffic coming home. If the car in front paused for a few seconds, the car moved on automatically as I'd expect. However, if the pause was more than about 10 seconds, a warning came up asking me to nudge the accelerator to move on...
  3. tomsl

    Deactivate Traffic Jam Assistance (TJA) while keeping ACC on?

    I apologise if this has been asked before, but this is something that is starting to annoy me. So if I drive on hihgways, I always use ACC. Sometimes I additionally activate Traffic Jam Assistance TJA for comfort, by pulling the MG Pilot lever twice in my direction, then both ACC and TJA are...
  4. Rolfe

    Six hours in a traffic jam...

    ... and all the electric cars were running out of battery. Well, that's the story I was told in the Post Office this afternoon. Of course it was second-hand and I don't even know where this immense traffic jam is supposed to have happened. I mused that EVs don't use much energy at very low...
  5. edwardrobert

    Traffic Jam Assist vs Adaptive Cruise Control

    Hi, can someone detail the differences between Traffic Jam Assist and Adaptive Cruise Control on the ZS EV please? For me they look like the same thing. Thank you
  6. Maciej

    Traffic jam assistant

    I have read the instructions I still cannot understand how to engage the TJA? Is there a video or photos of step by step instructions to activate it?
  7. andi51081

    ACC vs Traffic Jam Assist

    What’s the difference between the two? As far as I can see from the manual they both seem to do the same thing?
  8. jeffgolding

    Can you extend stationary time in traffic jam assist?

    Hi, I have just got my HS PHEV, loving it. Can anyone tell me when in traffic jam assist is there any way that you can extend the stationary time before you have to use the throttle? Many thanks for any answers, jeff.
  9. jeffgolding

    MG HS PHEV Traffic jam assist

    I picked up my HS PHEV on Thursday, absolutely loving it, blown away by the value for money. Whilst in the ordering process I am sure that I found somewhere that it has traffic jam assist ! I just can’t find it!! Can anyone please tell me where it is? Many thanks, jeff Golding.
  10. Muffin

    Understanding Traffic jam assist

    Can anyone explain How Traffic assist works
  11. CasPol

    Traffic Jam Assist

    I have read, that the MG ZS EV has "Traffic Jam Assist" . Can anyone explain how to activate the Traffic Jam Assist Function ? Thanks.
  12. F

    Traffic jam assist

    Hello I would have liked to know how to activate the traffic jam assist and if at home it works well and under what conditions it works best?
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