Exhibitions about the latest proposals for the A27 Arundel bypass will start tonight.
Highways England is staging a series of staffed displays of all the possible options for the £100m-£250m scheme.
The opening event will take place from 5.30pm-8pm tonight at the Cathedral Centre in London Road, Arundel.
It will be followed by further public consultation events on September 10 at Arundel and September 11 at Houghton and Storrington.
September 14 will see the display at Fontwell Park Racecourse from 10.30am-2.30pm before it moves to Coronation Hall in Slindon from 2pm-8pm on September 19.
The next stop will from 10am to 5pm on September 28 at Walberton Village Hall, followed by two events in Arundel and one in Littlehampton during October.
A Highways England spokesman said: “We announced a preferred route known as Option 5Av3 last year, following public consultation in autumn 2017.
“We then began further developing the design as part of our work towards submitting a formal planning application.
“We discovered new information during the course of this work and, given the significant environmental sensitivities in the area, even relatively minor changes can have an important impact on overall route assessments.
“We, therefore, want to understand…views on the revised options for the scheme based on the latest available information, which we are presenting through this latest consultation.”
An unstaffed display about the scheme will be available during opening hours on September 16 and 17 at Bognor Regis Town Hall and from 10am-5.30pm on October 9 at Yapton Village Hall.
The current proposals for the bypass date back to a 2015 feasibility study by Highways England.
This was followed by the initial consultation in the second half of 2017 before the preferred route was announced in May, 2018.
Highways England had to revise its plans after a High Court case by a Binsted resident. Protests were held in the village about the proposal’s effect on the South Downs National Park.
After the current consultation, it is expected the latest route will be revealed next year. Further public consultation will follow.
An application for the work should be submitted in 2021 and, if approved, work on site should begin in 2022-23.