VEK MNH Operating Manual v1.3 en
11.12.9 Direction Logic „Parking bay“
This direction logic is used where for short entrances and exits. Interference to counting due to cross traffic
on loop 1 is disabled in this logic.This logic suppresses the impairment of counting by cross traffic on loop 1.
It is therefore irrelevant whether loop 1 is laid in the adjoining lane or the manoeuvring area.
Positioning of the loops
The positioning of the loops is dependent on the direction in which congestion is anticipated. No tailbacks
are permitted to occur in travel direction 1 2. In travel direction 2 1, vehicles will also be correctly
counted in congestion, and in this situation the gap between vehicles must release one loop at a time.
Fig. 21: Parking bay Direction Logic
Tab. 34: Symbols for parking bay
Logic for travel direction 1 2
• The counting pulse is triggered as soon as both loops have been completely crossed
• Correct counting with single vehicles
• Correct counting also with manoeuvring
• Congestion and queues are not permitted to occur in travel direction 1 -> 2!
Logic for travel direction 2 1
• The counting pulse is triggered as soon as loop 2 is vacated in the direction of loop 1.
• Correct counting also with cross traffic
• Correct counting with queues
• Correct counting also when a single vehicle is manoeuvring
• No manoeuvring is permitted to take place in a queue!
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