Enter the number of travel lanes just prior to this vehicle’s critical pre-crash event.
For vehicles departing the trafficway prior to their critical pre-crash event, the trafficway selected is the one the vehicle departed. If this vehicle is in a junction just prior to its critical pre-crash event, the roadway selected is the one it is on before entering the junction.
A roadway (through lanes only) is one part of a divided trafficway or, if undivided, the same as the through lanes of the trafficway. A lane that can be used for through or turning traffic (dual purpose) will be considered a through lane.
Only lanes open for travel should be counted. Turn lanes are therefore excluded. This also excludes continuous left-turn lanes (which are considered "turn lanes").
If traffic flows in both directions and is undivided, enter the total number of lanes in both directions. If the trafficway is divided into two or more roadways, enter only the number of lanes for the roadway on which this vehicle was traveling.
The number of lanes counted does not include any that are rendered unusable by restriction of the right-of-way (e.g., closed due to construction).
00 - Non-Trafficway Area is used when this vehicle is entering a trafficway but was not on a trafficway prior to its critical pre-crash event.
01 - One Lane is used when there is only one travel lane.
02 - Two Lanes is used when there are two lanes of travel.
03 - Three Lanes is used when there are three lanes of travel.
04 - Four Lanes is used when there are four lanes of travel.
05 - Five Lanes is used when there are five lanes of travel.
06 - Six Lanes is used when there are six lanes of travel.
07 - Seven or More Lanes is used when there are seven or more lanes of travel.
99 - Unknown is used when the number of travel lanes just prior to this vehicle’s critical pre-crash event is unknown.