Vancouver region State Route 14 - Severe congestion
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Measures of severe congestion on SR 14 in the Vancouver region
Severe congestion
Severe congestion occurs when highway travel speeds are slower than 60% of the posted speed (about 36 mph for a 60 mph speed limit) leading to reduced highway efficiency. Refer to WSDOT's how to calculate severe congestion (PDF 5.9MB).
Sources: WSDOT Transportation Safety and Systems Analysis Division and WSDOT TRACFLOW (https://tracflow.wsdot.wa.gov/)
Performance highlights
Severe congestion on SR 14 in the Vancouver region worsened in 2023 compared to 2022, along the westbound morning commute.
At 7:45 a.m. commuters traveling from Camas to the I-205 Interchange on SR 14 experienced severe congestion with speeds below 36 mph or less on 29.4% of weekdays in 2023, compared to 5.4% in 2022.
In 2022, travelers experienced more severe congestion during the morning commute in the westbound direction compared to 2021. For example, at 7:45 a.m. speeds on SR 14 from Camas to the I-5 Interchange were below 36 mph on 5.4% of weekdays in 2022—up from 0.4% of weekdays in 2021.
In 2021, travelers experienced slightly less severe congestion during the morning commute in the westbound direction compared to 2020. Severe congestion during the evening commute in this direction did not change compared to 2020. For example, at 7:45 a.m. speeds on SR 14 from Camas to the I-5 Interchange were below 36 mph on less than 0.4% of weekdays in 2021—down from 2.3% of weekdays in 2020.
In 2020, due to the statewide response to COVID-19, there was a significant decrease in severe congestion compared to previous years. Commuters driving on SR 14 from Camas to the I-5 Interchange experienced almost no severely congested conditions (speeds of 36 mph or less).
Commuters driving on SR 14 from Camas to the I-5 Interchange drove in severely congested conditions (speeds of 36 mph or less) more often in 2019 than in 2018. For example, at 7:45 a.m. speeds on this commute were below 36 mph on 10.9% of weekdays in 2019—up from 4.2% of weekdays in 2018.