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Traffic light-controlled short slip roads near Bochum

Traffic light-controlled short slip roads near Bochum

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Discussion

Cosifantutte

Original Poster:

12 posts

9 months

Tuesday 29th August 2017
quotequote all
The east - west dual carriageway running through the fairly built-up Ruhrgebiet area has a lot of shortish slip roads with traffic lights, allowing strictly one vehicle at a time.

The variable speed limit seems to be usually in the range 80 - 120km/h

It seems unfair on HGVs and others that these traffic lights make it difficult to build up enough speed to join the carriageway. Stopping and starting also affects fuel consumption and pollution.

Am I missing something or are these traffic lights a daft idea?

JM

2,892 posts

132 months

Wednesday 30th August 2017
quotequote all
I think the idea is to allow one vehicle at a time to accelerate up to speed to join the lane 1 without causing too much slowing/bunching on the main carriageways.

Probably doesn't look ideal for HGV's, but if you think about it it's better than a queue of stationary or nearly stationary traffic trying to merge at the start of the merge point/across the solid lines separating the slip road from the carriageway.

TooMany2cvs

21,996 posts

52 months

Thursday 31st August 2017
quotequote all
Cosifantutte said:
The east - west dual carriageway running through the fairly built-up Ruhrgebiet area has a lot of shortish slip roads with traffic lights, allowing strictly one vehicle at a time.

The variable speed limit seems to be usually in the range 80 - 120km/h

It seems unfair on HGVs and others that these traffic lights make it difficult to build up enough speed to join the carriageway. Stopping and starting also affects fuel consumption and pollution.

Am I missing something or are these traffic lights a daft idea?
We have 'em in the UK, too - M42 J3 heading east, for one.