Arcadis (Consulting) is currently looking at traffic issues in the area with financial support from Cadwyn Clwyd, the Welsh Government, the European Union Rural Development Fund, Denbighshire County Council, Llangollen Town Council and the Clwydian Range and Dee Valley Area of Outstanding Natural Beauty.
* The leaflet for Tuesday's drop-in session.
Llangollen county councillor Graham Timms said that on Friday and Saturday Arcadis carried out a survey at three major junctions - Castle Street/Abbey Road, Castle Street/A5 Regent Street and Market Street/A5 Berwyn Road.
He added: “The video evidence will be analysed by Arcadis using computer modelling to help them to better understand the issues with congestion and traffic flow through the town.
“We're expecting a further consultation in the late summer on the ideas that Arcadis put forward. A final report will be produced for the end of September 2018.”
He went on: “The Llangollen 2020 working group wants to ensure that everyone can take part before the planning phase begins.
“Arcadis are in the process of speaking to residents, businesses and visitors before they start to draw up their suggestions to make the town better for all.
“There will be a drop-in session from 3pm until 7pm on Tuesday July 17 in Llangollen Town Hall.
“The event will give the opportunity for everyone to voice their opinions on problems in the centre of the town and how they might be improved.”