Nerium, also known as oleander, is a poisonous plant that should not be grown along the road where it can be easily accessible to humans or animals.

Neem is a tree that is often used in traditional medicine and is known for its insecticidal properties. However, it is not typically grown along roads for the purpose of absorbing vehicular pollutants.

Bougainvillea is a flowering plant that is often used as an ornamental plant due to its colorful bracts. While it can absorb some pollutants, it is not known for its ability to absorb vehicular pollutants specifically.

Calotropis, also known as milkweed, is a plant that is commonly used in phytoremediation due to its ability to absorb pollutants from the soil and air. It is often grown along roads and highways to help reduce air pollution.