Final answer:
In heavy traffic, it's recommended to maintain a 2-second gap between vehicles, which could equate to about one car length per 10 km/h of your travel speed.
Step-by-step explanation:
When traveling in heavy congested traffic, it is recommended to keep an adequate space cushion between your vehicle and the one ahead for safety. This space cushion varies depending on traffic conditions, but a general rule is to maintain at least a 2-second gap between your vehicle and the vehicle in front of you. In congested conditions, this could translate to approximately one car length for every 10 km/h of your speed. For instance, if you are traveling at 30 km/h, a safe distance might be three car lengths.
This cushion allows you enough time to react and stop if the vehicle in front of you brakes suddenly. The number of car-lengths increases in adverse weather conditions or if you are driving a larger vehicle. Remember that maintaining a safe following distance is not just a matter of road etiquette, but it's crucial for preventing collisions and ensuring the safety of all road users.