Garmin 2620 Owners Manual - Page 56

Reference Customizing Route Settings Using the 'Calculate Routes for' option allows you to take full advantage of the routing information contained in the StreetPilot's mapping software for planning the most efficient route for your type of vehicle. The following options are available: • Car/Motorcycle • Truck (large semi-tractor/trailer/lorry) • Bus • Emergency (ambulance, fire department, police, etc.) • Taxi • Delivery (delivery vehicles) • Bicycle (avoids routing through interstates and major highways) • Pedestrian 48 Preference setting for all route calculations. This setting is recommended if you usually have the same preference for your routes. Calculation Method - Allows you to control how thoroughly the StreetPilot searches for the perfect route. A trade-off exists between the length of time the unit takes to find a route and the quality of that route (given the calculation criterion selected under Route Preference settings). The following options are available: • Quickest Calculation: This calculation returns the fastest results, but it might not find the best route. • Quick Calculation: This takes a bit more time to calculate than the 'Quickest Calculation' method, but generates a better quality route. • Better Route: This generates an even better quality route, but uses a longer calculation time than the 'Quick Calculation' method. • Best Route: This generates the most optimal route, but takes the longest time to calculate. Calculate Routes for - Lets you take full advantage of the routing information built into the StreetPilot's mapping software. Some roads have vehicle-based restrictions. For example, a street or gate may be accessible by emergency vehicles only, or a residential street may not allow commercial trucking traffic. By specifying which vehicle type you are driving, you optimize the route for your vehicle type. Likewise, the StreetPilot may give you access to roads or turns that wouldn't be available to normal traffic. Avoidance button The Avoidance button appears on the Routing tab and allows you to avoid certain road types that may be undesirable on your route. The StreetPilot will use these road types only if alternative routes take you too far out of your way or if no other road is available. • U-Turns: If checked, the StreetPilot does not direct you to make a U-turn on non-divided highways. • Toll Roads: If checked, the StreetPilot avoids entering toll roads. • Highways: If checked, the StreetPilot avoids routing you along interstates and major highways. • Unpaved Roads: If checked, the StreetPilot avoids unpaved surfaces.