Distance While Passing Vehicle Occupies Left Lane

Passing distance, abbreviated as \(d_2\), is the distance traveled by the passing vehicle while in the left lane.

• See  \(\large{ PSD }\) = passing sight distance

 

Distance While Passing Vehicle Occupies Left Lane formulas

\(\large{ d_2 =  \frac{ \bar {u} \; t_2  }{ 0.68 }   }\)
\(\large{ d_2 =  1.47 \; \bar {u} \; t_2   }\)

Where:

Units	English	Metric
\(\large{ d_2 }\) = distance while passing vehicle occupies left lane	\(\large{ft}\)	\(\large{m}\)
\(\large{ \bar {u} }\) = average speed of passing vehicle	\(\large{\frac{ft}{sec}}\)	\(\large{\frac{m}{sec}}\)
\(\large{ t_2 }\) = time the passing vehicle occupies the left lane	\(\large{sec}\)	\(\large{s}\)