Mehrdar Khabari wrote: Referring to the heavy rain in the eastern axes of Capital province and frequent accidents, he said: Drivers should not drive more than 50 km per hour in weather conditions and heavy rain, because they face the phenomenon of sliding on water. In this situation, heavy and light vehicles are not exempt from this rule. The commander of the special road police in the east of Tehran province, stating that high speed, low tire tread, and water depth are the three causes of such accidents, said: Unfortunately, in this climate, damage caused by sliding on water or hydrocolloid increases, and the skill does not affect car control while driving. Kehrizi continued: