Complex sentence: In July 1988 a blanket speed limit of was imposed on all cars above 600 cc (the lower limit was kept for smaller cars) by the short lived PSDI government, but in September 1989 this was increased to for cars above and for smaller ones.
Split into simpler sentences: In July 1988 a blanket speed limit of was imposed on all cars above 600 cc (the lower limit was kept for smaller cars) by the short lived PSDI government. In September 1989 this was increased to for cars above and for smaller ones.