One of the most effective ways to minimise your impact on traffic is to work around peak periods, such as the morning and early evening rush hours and holidays. This could mean asking your team to adjust to atypical hours, such as night work.
Shift changes and other interruptions should be scheduled to coincide with peak traffic, unless this causes problems. If roads need to be closed, you should consider the practicality of opening them temporarily during peak hours every day for as long as possible with a reduced speed limit and steel plates in place.
Train your team
Construction workers can't be expected to pull double duty as traffic controllers, but they need to be trained in how to work safely and efficiently around traffic if it's their first time. Untrained workers are at higher risk of causing traffic jams or even accidents.