Times have been revealed for road closures when the Tour de France comes through Keighley, Silsden and the Worth Valley.
Roads on the route of the Grand Depart race will close from 6.30am on July 6.
Junctions with side roads on to the route will also have to be closed at the same time.
Roads are expected to reopen during late afternoon, but exact times are subject to public safety and the management of traffic flow.
The news, released by Bradford Council on Tuesday, was accompanied by a warning that vehicle access to, and within, parts of the district will be significantly restricted.
A spokesman said: “Movement of traffic through Keighley, Silsden, Cross Roads, Haw-orth and Oxenhope will not be permitted.”
Steve Seymour, chairman of Keighley Town Centre Association, said information such as this was now being released on a regular basis.
He is expecting to find out specific details of how the closures will affect central Keighley during a meeting with Bradford Council officers on May 9.
He added: “I’m hoping after the meeting, there will be a more detailed map available to businesses and customers about how they can access Keighley during the day of the race.”
Closure times were revealed after discussions with race organisers TdFHUB2014 Ltd and ASO.
The council said the early closure is needed to ensure riders could get through the district.
A spokesman added: “The closure times are necessary to allow for the route to be prepared and infrastructure to be put in place before spectators arrive.
“The Tour’s publicity ‘caravan’ of about 180 vehicles, followed by about 200 riders and their support teams, have to pass through.
“The infrastructure then has to be removed and spectators allowed to disperse safely.”
Pedestrians and cyclists will be able to use and cross the route prior to the main caravan arriving. Revised bus and train timetables will also be in operation. The council will write to residents and businesses along the route to let them know how the road closures will affect them.