original: a rush hour or peak hour is a part of the day during which traffic congestion on roads and crowding on public transport is worst .
simplifications: a rush hour or peak hour is a part of the day during which traffic congestion . a rush hour or peak hour is a part of the day in which there is a lot of traffic on roads and the biggest crowds are on public transport . rush hour is the peak of the day which has traffic congestion . a rush hour or peak hour is a part of the day during which traffic jams on roads and crowding on public transport is worst . rush hour is the time of day when traffic is most congested . when traffic congestion and crowding on public transport is at its worst is during rush or peak hours . a rush hour or peak hour is a part of the day during which traffic jams on roads and crowding on public transport is worst . a rush hour or peak hour is a part of the day during which heavy traffic on raods and crowding on public transport is the worst .